Automatic merge from submit-queue

Move Federation e2e test code to independent package

**What this PR does / why we need it**: Move federation e2e test code to an independent package called e2e_federation. This will help in multiple ways.
- easy to move the federation related code to a separate repo from core.
- one step closer to register/unregister clusters to federation only once during e2e instead of every test case. we need to introduce singleton to register cluster during framework creation which will be handled in subsequent PR.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes # 
Optimize federation e2e suite which takes long time to execute currently.

**Special notes for your reviewer**: I have tried to segregate into multiple commits. request to review commit by commit. also mostly the change is about moving the functions to a new location/package.

**Release note**:

```release-note
```

@madhusudancs @nikhiljindal @colhom