To support read the timestamp fields of custom resources

[dontan001]

What this PR does / why we need it:
This is to fix the issue #1765

How does this change affect the cardinality of KSM: (increases, decreases or does not change cardinality)
N/A

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: dontan001 / name: Dongge Tan (889d7b4)

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[dontan001]

please have a look when get chance @mrueg @dgrisonnet @fpetkovski, thanks a lot

[dgrisonnet]

Looks good to me, leaving approval to another pair of eyes.

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dgrisonnet, dontan001

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