Added request timeout for notifier http client

[ssd04]

Description of the reasoning behind the pull request (what feature was missing / how the problem was manifesting itself / what was the motive behind the refactoring)

• There was no http request timeout in notifier client, so this can cause connection issues

Proposed Changes

• added config variable for request timeout in seconds
• refactor http client wrapper for notifier

Testing procedure

• System test with notifier client enabled:
  • check if request gets timeout in case proxy instance is hanging

[codecov-commenter]

Codecov Report

Base: 73.87% // Head: 73.87% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (93e9ba2) compared to base (05f6f1d).
Patch coverage: 96.22% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           rc/v1.4.0    #4475   +/-   ##
==========================================
  Coverage      73.87%   73.87%           
==========================================
  Files            692      692           
  Lines          88308    88337   +29     
==========================================
+ Hits           65234    65261   +27     
- Misses         18160    18161    +1     
- Partials        4914     4915    +1     

Impacted Files	Coverage Δ
outport/factory/notifierFactory.go	92.30% <80.00%> (-7.70%)	⬇️
factory/statusComponents.go	58.50% <100.00%> (+0.28%)	⬆️
outport/notifier/eventNotifier.go	84.15% <100.00%> (+2.34%)	⬆️
outport/notifier/httpClientWrapper.go	73.33% <100.00%> (ø)

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[gabi-vuls]

System test passed.