feat: skip destroy imported resources

[hoangndst]

What type of PR is this?

/kind feature

What this PR does / why we need it:

When the imported tf resource is still used by another release, we need to retain it so that the release using that resource can function properly.

Which issue(s) this PR fixes:

Fixes #1200

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Additional documentation e.g., design docs, usage docs, etc.:

[coveralls]

Pull Request Test Coverage Report for Build 10199276186

Details

• 16 of 53 (30.19%) changed or added relevant lines in 3 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.09%) to 52.617%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/engine/operation/graph/resource_node.go	3	8	37.5%
pkg/engine/runtime/terraform/tfops/workspace.go	9	21	42.86%
pkg/engine/runtime/terraform/terraform_runtime.go	4	24	16.67%

Files with Coverage Reduction	New Missed Lines	%
pkg/engine/operation/watch.go	1	82.76%

Totals
Change from base Build 10179449732:	-0.09%
Covered Lines:	8705
Relevant Lines:	16544

---

💛 - Coveralls

[liu-hm19]

lgtm

[liu-hm19]

@hoangndst Hi! Sorry for taking some time to review this PR. It looks good to me, but it seems to have conflicts with an updated file from main branch. I will help to solve this conflict and merge this PR soon. Your contribution will be mentioned and appreciated in the upcoming v0.12.1 release. Thanks very much for your contributions! 👍

[liu-hm19]

lgtm