Add SPDX-License-Identifier headers to most files.

This tags all the files that I can clearly identify as being part of
Netdata and not a local copy of a third party package that we're
redistributing.

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/stress.sh b/tests/stress.sh
index d09d69895e..186dd47e8f 100755
--- a/tests/stress.sh
+++ b/tests/stress.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
 
 # set the host to connect to
 if [ ! -z "$1" ]