handle exception on notification gateways by discovery to have safe registration process

[pavel-jares-bcm]

When service is registration into discovery service, discovery service notify about change all gateways. They can evict caches and speed up registry update.

This PR fix this process:

• do not notify gateway itself about its registration
• if any gateway is not available, dont distribute exception from REST (it can break whole process)
• instanceof trackstack write only message into log

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@aad1382). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #525   +/-   ##
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  Coverage          ?   74.11%           
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  Files             ?      299           
  Lines             ?     5649           
  Branches          ?      675           
=========================================
  Hits              ?     4187           
  Misses            ?     1293           
  Partials          ?      169

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

100.0% Coverage
0.0% Duplication

[JirkaAichler]

Awesome!