Quote NINJA_KUBECONFIG when writing kubeconfig (#213)

Unquoted `echo ${NINJA_KUBECONFIG}` word-splits the multi-line YAML on
whitespace, collapsing newlines into spaces and producing an invalid
kubeconfig (`yaml: mapping values are not allowed in this context`).

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

.github/workflows/deploy.yml

@@ -82,7 +82,7 @@ jobs:
           if [ "$CLUSTER" = "prod" ]; then
             linode-cli lke kubeconfig-view 326609 --json | jq -r .[0].kubeconfig | base64 -d > ~/.kube/config
           else
-            echo ${NINJA_KUBECONFIG} > ~/.kube/config
+            echo "${NINJA_KUBECONFIG}" > ~/.kube/config
           fi
           kubectl get nodes
           echo "deploy docker image"

.github/workflows/release.yml

@@ -94,6 +94,6 @@ jobs:
         run: |
           echo "connect to cluster"
           mkdir -p ~/.kube
-          echo ${NINJA_KUBECONFIG} > ~/.kube/config
+          echo "${NINJA_KUBECONFIG}" > ~/.kube/config
           kubectl get nodes
           make deploy-to-linode