Merge pull request #43137 from shashidharatd/federation-domain

Automatic merge from submit-queue

[Federation] Remove FEDERATIONS_DOMAIN_MAP references

Remove all references to FEDERATIONS_DOMAIN_MAP as this method is no longer is used and is replaced by adding federation domain map to kube-dns configmap.

cc @madhusudancs @kubernetes/sig-federation-pr-reviews 

**Release note**:
```
[Federation] Mechanism of adding `federation domain maps` to kube-dns deployment via `--federations` flag is superseded by adding/updating `federations` key in `kube-system/kube-dns` configmap. If user is using kubefed tool to join cluster federation, adding federation domain maps to kube-dns is already taken care by `kubefed join` and does not need further action.
```

cluster/addons/dns/kubedns-controller.yaml.base

@@ -89,7 +89,6 @@ spec:
         - --dns-port=10053
         - --config-dir=/kube-dns-config
         - --v=2
-        __PILLAR__FEDERATIONS__DOMAIN__MAP__
         env:
         - name: PROMETHEUS_PORT
           value: "10055"

cluster/addons/dns/kubedns-controller.yaml.in

@@ -89,7 +89,6 @@ spec:
         - --dns-port=10053
         - --config-dir=/kube-dns-config
         - --v=2
-        {{ pillar['federations_domain_map'] }}
         env:
         - name: PROMETHEUS_PORT
           value: "10055"

cluster/addons/dns/transforms2salt.sed

@@ -1,4 +1,3 @@
 s/__PILLAR__DNS__SERVER__/{{ pillar['dns_server'] }}/g
 s/__PILLAR__DNS__DOMAIN__/{{ pillar['dns_domain'] }}/g
-s/__PILLAR__FEDERATIONS__DOMAIN__MAP__/{{ pillar['federations_domain_map'] }}/g
 s/__MACHINE_GENERATED_WARNING__/Warning: This is a file generated from the base underscore template file: __SOURCE_FILENAME__/g

cluster/addons/dns/transforms2sed.sed

@@ -1,4 +1,3 @@
 s/__PILLAR__DNS__SERVER__/$DNS_SERVER_IP/g
 s/__PILLAR__DNS__DOMAIN__/$DNS_DOMAIN/g
-/__PILLAR__FEDERATIONS__DOMAIN__MAP__/d
 s/__MACHINE_GENERATED_WARNING__/Warning: This is a file generated from the base underscore template file: __SOURCE_FILENAME__/g