Add SIG CLI subprojects krew and krew-index

reference: https://github.com/kubernetes/org/issues/599

Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>

sig-cli/README.md

@@ -58,6 +58,14 @@ The following subprojects are owned by sig-cli:
     - https://raw.githubusercontent.com/kubernetes/kubernetes/master/staging/src/k8s.io/cli-runtime/OWNERS
     - https://raw.githubusercontent.com/kubernetes/sample-cli-plugin/master/OWNERS
     - https://raw.githubusercontent.com/kubernetes/kubernetes/master/staging/src/k8s.io/sample-cli-plugin/OWNERS
+- **krew**
+  - Description: Plugin manager for kubectl.
+  - Owners:
+    - https://raw.githubusercontent.com/kubernetes-sigs/krew/master/OWNERS
+- **krew-index**
+  - Description: Centralized plugin index for krew.
+  - Owners:
+    - https://raw.githubusercontent.com/kubernetes-sigs/krew-index/master/OWNERS
 
 ## GitHub Teams
 

sigs.yaml

@@ -708,7 +708,6 @@ sigs:
       - https://raw.githubusercontent.com/kubernetes/kubernetes/master/pkg/kubectl/OWNERS
     - name: kustomize
       owners:
-      # "owners" entry
       - https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/OWNERS
     - name: cli-sdk
       owners:
@@ -716,6 +715,14 @@ sigs:
       - https://raw.githubusercontent.com/kubernetes/kubernetes/master/staging/src/k8s.io/cli-runtime/OWNERS
       - https://raw.githubusercontent.com/kubernetes/sample-cli-plugin/master/OWNERS
       - https://raw.githubusercontent.com/kubernetes/kubernetes/master/staging/src/k8s.io/sample-cli-plugin/OWNERS
+    - name: krew
+      description: Plugin manager for kubectl.
+      owners:
+      - https://raw.githubusercontent.com/kubernetes-sigs/krew/master/OWNERS
+    - name: krew-index
+      description: Centralized plugin index for krew.
+      owners:
+      - https://raw.githubusercontent.com/kubernetes-sigs/krew-index/master/OWNERS
   - name: Cloud Provider
     dir: sig-cloud-provider
     mission_statement: >