* msteams: MS_TEAMS_INBOUNDWEBHOOK_URL MS_TEAMS_APIKEY for msteams webhook
* msteams(webhook)
* msteams: escape backslashes (SCOM) in example-payload.json.j2
* msteams webhook: use list not a tuple.
* msteams webhook: comment tests that need mocking
* msteams webhook: tests: only send Content-Type header.