Fixed to certainly store the metadata in graceful shutdown

[t-kikuc]

What this PR does:

as title.

Why we need it:

Currently, the Wait stage waits for the whole duration AGAIN after graceful shutdown.
That's because graceful shutdown cannot store startTime to Control Plane.

Before fix (wait 1m again after restarting):

After fix (wait ends soon after restarting):

Which issue(s) this PR fixes:

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[Warashi]

LGTM

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 26.14%. Comparing base (6e98705) to head (1e63f1f).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/app/piped/executor/wait/wait.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5461      +/-   ##
==========================================
- Coverage   26.14%   26.14%   -0.01%     
==========================================
  Files         457      457              
  Lines       49107    49107              
==========================================
- Hits        12841    12837       -4     
- Misses      35244    35247       +3     
- Partials     1022     1023       +1     

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