add copy product logic

[AllenShen]

Signed-off-by: allenshen [email protected]

What this PR does / Why we need it:

1. add ability to copy from existed ones when creating products for k8s projects
2. fix bug when copying helm products

Does this PR introduce a user-facing change?

yes

• [ ] API change
• [ ] database schema change
• [ ] behavioral change
• [x] change in non-functional attributes such as efficiency or availability
• [ ] fix of a previous issue