[Bug] Revisit shallow copy of struct

[kevin85421]

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KubeRay Component

ray-operator

What happened + What you expected to happen

We need to revisit all shallow copy of struct in KubeRay because the following reasons:

(1) Shallow copy of a go struct is not encouraged, and see article for more details.

(2) Take #714 as an example, shallow copy of struct causes worker pods may be created with different configurations.

(3) "shallow copy of struct" I mentioned in (2) is not totally accurate. A struct is by default deep copied, but elements in the struct may be shallow copied or deep copied. See Shallow copy and Deep copy in Go for more details.

Reproduction script

See #714

Anything else

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!