Client credentials should never be cleared

[kumare3]

Signed-off-by: Ketan Umare ketan.umare@gmail.com

TL;DR

In the case when client credentials have expired or corrupted, the
default _refresh_credentials_standard flow will automatically force
the client to refresh_access_token.

But, in a happy case, the clear, unnecessarily removes the client creds,
thus forcing an auth to be retriggered

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

[codecov]

Codecov Report

Merging #922 (6c71720) into master (0f86bb2) will decrease coverage by 0.77%.
The diff coverage is 42.85%.

@@            Coverage Diff             @@
##           master     #922      +/-   ##
==========================================
- Coverage   86.43%   85.66%   -0.78%     
==========================================
  Files         243      243              
  Lines       23243    22269     -974     
  Branches     2618     2285     -333     
==========================================
- Hits        20091    19076    -1015     
- Misses       2711     2745      +34     
- Partials      441      448       +7     

Impacted Files	Coverage Δ
flytekit/clients/raw.py	61.60% <0.00%> (-5.41%)	⬇️
flytekit/clis/auth/auth.py	43.94% <40.00%> (-15.81%)	⬇️
tests/flytekit/unit/cli/auth/test_auth.py	100.00% <100.00%> (+6.06%)	⬆️
tests/flytekit/unit/extras/tasks/test_shell.py	81.81% <0.00%> (-18.19%)	⬇️
flytekit/models/admin/task_execution.py	42.10% <0.00%> (-11.42%)	⬇️
flytekit/interfaces/cli_identifiers.py	39.62% <0.00%> (-8.77%)	⬇️
flytekit/remote/executions.py	57.47% <0.00%> (-8.27%)	⬇️
flytekit/clis/sdk_in_container/local_cache.py	71.42% <0.00%> (-6.35%)	⬇️
tests/flytekit/unit/remote/test_sandbox.py	53.19% <0.00%> (-6.07%)	⬇️
... and 127 more

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