Automatic merge from submit-queue

Disabling service-dns controller for federation kubectl tests

**What this PR does / why we need it**:

DNS was unnecessary to do kubectl tests against federation, but it was required earlier as service-controller would not start without initializing dns-provider. Now since we have the capability to disable service-dns controller, we no longer need to initialize federation-controller-manger with DNS specific stuff. So removing it.

Ref: https://github.com/kubernetes/kubernetes/pull/43136#issuecomment-287242198

**Release note**:
```
NONE
```
/cc @nikhiljindal @marun 
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