backport : dfdaemon to gracefully shutdown

[akashhr]

Description

backporting dfdaemon to gracefully shutdown feature to v2.0.9 release.

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

Merging #2934 (2fe16dc) into release-2.0.9 (b2c11fb) will decrease coverage by 0.04%.
The diff coverage is 9.09%.

Additional details and impacted files

@@                Coverage Diff                @@
##           release-2.0.9    #2934      +/-   ##
=================================================
- Coverage          49.59%   49.55%   -0.04%     
=================================================
  Files                146      146              
  Lines              19520    19530      +10     
=================================================
- Hits                9680     9678       -2     
- Misses              9244     9254      +10     
- Partials             596      598       +2     

Flag	Coverage Δ
Object-compatibility-e2etests	?
e2etests	?
unittests	49.55% <9.09%> (-0.04%)	⬇️

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

Files	Coverage Δ
client/daemon/proxy/proxy.go	13.85% <33.33%> (+0.12%)	⬆️
client/daemon/proxy/proxy_sni.go	0.00% <0.00%> (ø)
client/daemon/proxy/proxy_manager.go	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

[gaius-qi]

LGTM