Add new tests for testing create-delete-recreate scenario

[gargnitingoogle]

Description

Add tests for creating-deleting-creating-deleting sequence for (a) file, (b) directory containing files.
This is complementary to the changes in PR #3226 .

An improvement PR on top of this is in #3231 .

Link to the issue in case of a bug fix.

b/411076451

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - Passed as part of presubmit ( run1, run2 )

Any backward incompatible change? If so, please explain.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.91%. Comparing base (1b7f821) to head (53a2b5d).
Report is 11 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3227      +/-   ##
==========================================
+ Coverage   78.76%   78.91%   +0.14%     
==========================================
  Files         129      129              
  Lines       17762    17762              
==========================================
+ Hits        13991    14016      +25     
+ Misses       3305     3286      -19     
+ Partials      466      460       -6     

Flag	Coverage Δ
unittests	78.91% <ø> (+0.14%)	⬆️

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.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.