Kokoro tpc build fix

[Tulsishah]

Description

Kokoro TPC build is failing with

ERROR: (gcloud) Invalid choice: 'storage'.
This command is available in one or more alternate release tracks.  Try:
  gcloud alpha storage

Link to the issue in case of a bug fix.

NA

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - NA

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.58%. Comparing base (6f3acc0) to head (55c41cb).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2033      +/-   ##
==========================================
+ Coverage   71.56%   71.58%   +0.01%     
==========================================
  Files          98       98              
  Lines       10756    10756              
==========================================
+ Hits         7698     7700       +2     
+ Misses       2715     2714       -1     
+ Partials      343      342       -1     

Flag	Coverage Δ
unittests	71.58% <ø> (+0.01%)	⬆️

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.