fix(meta): Disable device notification by default

[cloudxxx8]

Set Notifications.PostDeviceChanges to false by default in core-metadata, because support-notifications service is not always up.
Modify the logging level Warn when sending notifications failed.
Close #3768

Signed-off-by: Cloud Tsai [email protected]

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PR Checklist

Please check if your PR fulfills the following requirements:

• I am not introducing a breaking change (if you are, flag in conventional commit message with BREAKING CHANGE: describing the break)
• I am not introducing a new dependency (add notes below if you are)
• I have added unit tests for the new feature or bug fix (if not, why?) just change the configuration and logging level. edgex-taf issue opened: Modify the core-metadata Device Notification feature test edgex-taf#539
• I have fully tested (add details below) this the new feature or bug fix (if not, why?)
• I have opened a PR for the related docs change (if not, why?)
  fix(microservices): Correct metadata default config edgex-docs#617

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov-commenter]

Codecov Report

Merging #3789 (0eb2b22) into main (adab524) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3789   +/-   ##
=======================================
  Coverage   45.77%   45.77%           
=======================================
  Files         112      112           
  Lines        9640     9640           
=======================================
  Hits         4413     4413           
  Misses       4844     4844           
  Partials      383      383           

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[lenny-goodell]

LGTM