bugfix for catalog-operator and packageserver pods being in CrashLoopBackOff if updateStrategy is empty

[rashmigottipati]

Description:

• dont poll if updateStrategy and any of its child references are empty
• cover the panic by adding nil protection checks along the pointer stack of updateStrategy struct

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov]

Codecov Report

Attention: Patch coverage is 57.14286% with 12 lines in your changes missing coverage. Please review.

Project coverage is 39.23%. Comparing base (d6920a4) to head (82308c6).

Files	Patch %	Lines
pkg/operators/v1alpha1/catalogsource_types.go	57.14%	10 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #340      +/-   ##
==========================================
- Coverage   39.43%   39.23%   -0.20%     
==========================================
  Files          56       56              
  Lines        4516     4521       +5     
==========================================
- Hits         1781     1774       -7     
- Misses       2581     2591      +10     
- Partials      154      156       +2     

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[perdasilva]

closing as this is no longer required