fix init and close of logs stream

[MUzairS15]

Description

The log stream once created was not getting closed causing issues when the user again tried to stream logs for the same pod.
The PR ensure the log stream is appropriately closed when 'stop' signal is received.
Notes for Reviewers

Signed commits

• Yes, I signed my commits.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 11 lines in your changes are missing coverage. Please review.

Project coverage is 9.35%. Comparing base (a8e2fb7) to head (8394632).
Report is 7 commits behind head on master.

Files	Patch %	Lines
meshsync/logstream.go	0.00%	8 Missing ⚠️
internal/config/crd_config.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #304      +/-   ##
=========================================
- Coverage    9.37%   9.35%   -0.02%     
=========================================
  Files          10      10              
  Lines         651     652       +1     
=========================================
  Hits           61      61              
- Misses        583     584       +1     
  Partials        7       7              

Flag	Coverage Δ
unittests	9.35% <0.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.