improve(logger): ignore invalid slack webhook URLs #4815
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Motivation
An end user may want to instantiate an UMA logger with a slack transport but only send slack messages for specific notification paths. This is not currently possible since we will unconditionally post a text payload to either the config's escalation path webhook URL or the default webhook URL.
Summary
This PR now allows invalid URLs to be defined in
SLACK_CONFIG
, and, if an invalid URL is selected as thewebhookUrl
,log
will exit early.