[CIT-646] Add child device support (#563)

* tedge_mapper c8y subscribes "tedge/measurements/+" newly.

* The last field of topic is considered as a child ID.

* When the child ID is new, mapper sends SmartREST101 child device creation request.

* Given child ID, mapper converts Thin Edge JSON to Cumulocity JSON with specific fields.

* Add "externalSource" as a reserved word

Signed-off-by: Rina Fujino <18257209+rina23q@users.noreply.github.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 3ca86992..c37b4d61 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -332,6 +332,7 @@ dependencies = [
  "pretty_assertions",
  "proptest",
  "serde_json",
+ "test-case",
  "thin_edge_json",
  "thiserror",
 ]