Nil pointer dereference panic fix

[iulianpascalau]

• started the health service as the first step when creating a node
• fixed one integration test
• added mutex protection in interceptors
• added more metrics in the trie syncer

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (rc/2022-update-libs01@17f7132). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head 9220214 differs from pull request most recent head 14cde3b. Consider uploading reports for the commit 14cde3b to get more accurate results

@@                   Coverage Diff                    @@
##             rc/2022-update-libs01    #4129   +/-   ##
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  Coverage                         ?   74.84%           
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  Files                            ?      609           
  Lines                            ?    80970           
  Branches                         ?        0           
========================================================
  Hits                             ?    60598           
  Misses                           ?    15736           
  Partials                         ?     4636           

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[gabi-vuls]

System test passed.