[cherry-pick to v1.12] monitor velero logs and fix E2E issues

[danfengliu]

1. Capture Velero pod log and K8S cluster event;
2. Fix wrong path of storageclass yaml file issue caused by pert test;
3. Fix change storageclass test issue that no sc named 'default' in EKS cluster;
4. Support AWS credential as config format;
5. Support more E2E script input parameters like standy cluster plugins and provider.

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[codecov]

Codecov Report

Merging #6708 (ab28a09) into release-1.12 (90f4cc5) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           release-1.12    #6708   +/-   ##
=============================================
  Coverage         60.36%   60.36%           
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  Files               242      242           
  Lines             25979    25979           
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  Hits              15683    15683           
  Misses             9194     9194           
  Partials           1102     1102