Makefile.am files indentation (#7252)

* Use 4 spaces for indentation of non-recipe lines in Makefile.am files

* Be more consistent in the use of space before = in Makefile.am files

105 files changed, 660 insertions, 686 deletions

diff --git a/Makefile.am b/Makefile.am
index 094581bcc0..0fda8457ce 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,89 +1,89 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-AUTOMAKE_OPTIONS=foreign subdir-objects 1.11
+AUTOMAKE_OPTIONS = foreign subdir-objects 1.11
 ACLOCAL_AMFLAGS = -I build/m4
 
-MAINTAINERCLEANFILES= \
-	config.log config.status \
-	$(srcdir)/Makefile.in \
-	$(srcdir)/config.h.in $(srcdir)/config.h.in~ $(srcdir)/configure \
-	$(srcdir)/install-sh $(srcdir)/ltmain.sh $(srcdir)/missing \
-	$(srcdir)/compile $(srcdir)/depcomp $(srcdir)/aclocal.m4 \
-	$(srcdir)/config.guess $(srcdir)/config.sub \
-	$(srcdir)/m4/ltsugar.m4 $(srcdir)/m4/libtool.m4 \
-	$(srcdir)/m4/ltversion.m4 $(srcdir)/m4/lt~obsolete.m4 \
-	$(srcdir)/m4/ltoptions.m4 \
-	$(srcdir)/pkcs11-helper.spec $(srcdir)/config-w32-vc.h
-
-CLEANFILES= \
-	$(srcdir)/$(distdir).tar.gz
+MAINTAINERCLEANFILES = \
+    config.log config.status \
+    $(srcdir)/Makefile.in \
+    $(srcdir)/config.h.in $(srcdir)/config.h.in~ $(srcdir)/configure \
+    $(srcdir)/install-sh $(srcdir)/ltmain.sh $(srcdir)/missing \
+    $(srcdir)/compile $(srcdir)/depcomp $(srcdir)/aclocal.m4 \
+    $(srcdir)/config.guess $(srcdir)/config.sub \
+    $(srcdir)/m4/ltsugar.m4 $(srcdir)/m4/libtool.m4 \
+    $(srcdir)/m4/ltversion.m4 $(srcdir)/m4/lt~obsolete.m4 \
+    $(srcdir)/m4/ltoptions.m4 \
+    $(srcdir)/pkcs11-helper.spec $(srcdir)/config-w32-vc.h
+
+CLEANFILES = \
+    $(srcdir)/$(distdir).tar.gz
 
 EXTRA_DIST = \
-	.gitignore \
-	.csslintrc \
-	.eslintignore \
-	.eslintrc \
-	.github/CODEOWNERS \
-	build/m4/jemalloc.m4 \
-	build/m4/ax_c___atomic.m4 \
-	build/m4/ax_check_enable_debug.m4 \
-	build/m4/ax_c_mallinfo.m4 \
-	build/m4/ax_gcc_func_attribute.m4 \
-	build/m4/ax_check_compile_flag.m4 \
-	build/m4/ax_c_statement_expressions.m4 \
-	build/m4/ax_pthread.m4 \
-	build/m4/ax_c_lto.m4 \
-	build/m4/ax_c_mallopt.m4 \
-	build/m4/tcmalloc.m4 \
-	build/m4/ax_c__generic.m4 \
-	README.md \
-	CONTRIBUTORS.md \
-	CODE_OF_CONDUCT.md \
-	LICENSE \
-	REDISTRIBUTED.md \
-	CONTRIBUTING.md \
-	$(NULL)
+    .gitignore \
+    .csslintrc \
+    .eslintignore \
+    .eslintrc \
+    .github/CODEOWNERS \
+    build/m4/jemalloc.m4 \
+    build/m4/ax_c___atomic.m4 \
+    build/m4/ax_check_enable_debug.m4 \
+    build/m4/ax_c_mallinfo.m4 \
+    build/m4/ax_gcc_func_attribute.m4 \
+    build/m4/ax_check_compile_flag.m4 \
+    build/m4/ax_c_statement_expressions.m4 \
+    build/m4/ax_pthread.m4 \
+    build/m4/ax_c_lto.m4 \
+    build/m4/ax_c_mallopt.m4 \
+    build/m4/tcmalloc.m4 \
+    build/m4/ax_c__generic.m4 \
+    README.md \
+    CONTRIBUTORS.md \
+    CODE_OF_CONDUCT.md \
+    LICENSE \
+    REDISTRIBUTED.md \
+    CONTRIBUTING.md \
+    $(NULL)
 
 SUBDIRS = \
-	diagrams \
-	system \
-	tests \
-	$(NULL)
-
-dist_noinst_DATA= \
-	CHANGELOG.md \
-	cppcheck.sh \
-	configs.signatures \
-	contrib \
-	netdata.cppcheck \
-	netdata.spec \
-	package.json \
-	docs \
-	packaging/version \
-	packaging/go.d.version \
-	packaging/go.d.checksums \
-	packaging/installer/README.md \
-	packaging/installer/UNINSTALL.md \
-	packaging/installer/UPDATE.md \
-	netlify.toml \
-	$(NULL)
+    diagrams \
+    system \
+    tests \
+    $(NULL)
+
+dist_noinst_DATA = \
+    CHANGELOG.md \
+    cppcheck.sh \
+    configs.signatures \
+    contrib \
+    netdata.cppcheck \
+    netdata.spec \
+    package.json \
+    docs \
+    packaging/version \
+    packaging/go.d.version \
+    packaging/go.d.checksums \
+    packaging/installer/README.md \
+    packaging/installer/UNINSTALL.md \
+    packaging/installer/UPDATE.md \
+    netlify.toml \
+    $(NULL)
 
 # until integrated within build
 # should be proper init.d/openrc/systemd usable
-dist_noinst_SCRIPTS= \
-	coverity-scan.sh \
-	packaging/installer/netdata-updater.sh \
-	packaging/installer/netdata-uninstaller.sh \
-	packaging/installer/kickstart.sh \
-	packaging/installer/kickstart-static64.sh \
-	packaging/installer/functions.sh \
-	netdata-installer.sh \
-	docs/generator/buildhtml.sh \
-	docs/generator/buildyaml.sh \
-	docs/generator/checklinks.sh \
-	docs/generator/requirements.txt \
-	docs/generator/runtime.txt \
-	$(NULL)
+dist_noinst_SCRIPTS = \
+    coverity-scan.sh \
+    packaging/installer/netdata-updater.sh \
+    packaging/installer/netdata-uninstaller.sh \
+    packaging/installer/kickstart.sh \
+    packaging/installer/kickstart-static64.sh \
+    packaging/installer/functions.sh \
+    netdata-installer.sh \
+    docs/generator/buildhtml.sh \
+    docs/generator/buildyaml.sh \
+    docs/generator/checklinks.sh \
+    docs/generator/requirements.txt \
+    docs/generator/runtime.txt \
+    $(NULL)
 
 # -----------------------------------------------------------------------------
 # Compile netdata binaries
@@ -98,19 +98,19 @@ SUBDIRS += \
     registry \
     streaming \
     web \
-	$(NULL)
+    $(NULL)
 
 
 AM_CFLAGS = \
-	$(OPTIONAL_MATH_CFLAGS) \
-	$(OPTIONAL_NFACCT_CFLAGS) \
-	$(OPTIONAL_ZLIB_CFLAGS) \
-	$(OPTIONAL_UUID_CFLAGS) \
-	$(OPTIONAL_LIBCAP_LIBS) \
-	$(OPTIONAL_IPMIMONITORING_CFLAGS) \
-	$(OPTIONAL_CUPS_CFLAGS) \
-	$(OPTIONAL_XENSTAT_CFLAGS) \
-	$(NULL)
+    $(OPTIONAL_MATH_CFLAGS) \
+    $(OPTIONAL_NFACCT_CFLAGS) \
+    $(OPTIONAL_ZLIB_CFLAGS) \
+    $(OPTIONAL_UUID_CFLAGS) \
+    $(OPTIONAL_LIBCAP_LIBS) \
+    $(OPTIONAL_IPMIMONITORING_CFLAGS) \
+    $(OPTIONAL_CUPS_CFLAGS) \
+    $(OPTIONAL_XENSTAT_CFLAGS) \
+    $(NULL)
 
 sbin_PROGRAMS =
 dist_cache_DATA = packaging/installer/.keep
@@ -160,20 +160,20 @@ LIBNETDATA_FILES = \
     libnetdata/storage_number/storage_number.h \
     libnetdata/threads/threads.c \
     libnetdata/threads/threads.h \
-	libnetdata/url/url.c \
-	libnetdata/url/url.h \
-	libnetdata/json/json.c \
-	libnetdata/json/json.h \
-	libnetdata/json/jsmn.c \
-	libnetdata/json/jsmn.h \
-	libnetdata/health/health.c \
-	libnetdata/health/health.h \
+    libnetdata/url/url.c \
+    libnetdata/url/url.h \
+    libnetdata/json/json.c \
+    libnetdata/json/json.h \
+    libnetdata/json/jsmn.c \
+    libnetdata/json/jsmn.h \
+    libnetdata/health/health.c \
+    libnetdata/health/health.h \
     libnetdata/string/utf8.h \
     $(NULL)
 
 APPS_PLUGIN_FILES = \
-	collectors/apps.plugin/apps_plugin.c \
-	$(LIBNETDATA_FILES) \
+    collectors/apps.plugin/apps_plugin.c \
+    $(LIBNETDATA_FILES) \
     $(NULL)
 
 CHECKS_PLUGIN_FILES = \
@@ -182,29 +182,29 @@ CHECKS_PLUGIN_FILES = \
     $(NULL)
 
 FREEBSD_PLUGIN_FILES = \
-	collectors/freebsd.plugin/plugin_freebsd.c \
-	collectors/freebsd.plugin/plugin_freebsd.h \
-	collectors/freebsd.plugin/freebsd_sysctl.c \
-	collectors/freebsd.plugin/freebsd_getmntinfo.c \
-	collectors/freebsd.plugin/freebsd_getifaddrs.c \
-	collectors/freebsd.plugin/freebsd_devstat.c \
-	collectors/freebsd.plugin/freebsd_kstat_zfs.c \
-	collectors/freebsd.plugin/freebsd_ipfw.c \
-	collectors/proc.plugin/zfs_common.c \
-	collectors/proc.plugin/zfs_common.h \
+    collectors/freebsd.plugin/plugin_freebsd.c \
+    collectors/freebsd.plugin/plugin_freebsd.h \
+    collectors/freebsd.plugin/freebsd_sysctl.c \
+    collectors/freebsd.plugin/freebsd_getmntinfo.c \
+    collectors/freebsd.plug