Refactor SSH key scanning and connection in Ansible actions

.github/actions/setup-ansible-env/action.yml

@@ -56,7 +56,7 @@ runs:
       run: |
         mkdir -p ~/.ssh
         for HOST in $(cat /tmp/ansible_hosts); do
-          ssh-keyscan $HOST >> ~/.ssh/known_hosts
+          ssh-keyscan "$HOST" >> ~/.ssh/known_hosts
         done
         chmod 600 ~/.ssh/known_hosts
 
@@ -87,5 +87,5 @@ runs:
         SSH_AUTH_SOCK: ${{ inputs.ssh-auth-socket }}
       run: |
         for HOST in $(cat /tmp/ansible_hosts); do
-          ssh $ANSIBLE_USER@$HOST echo "SSH connection to $HOST successful"
+          ssh "$ANSIBLE_USER@$HOST" echo "SSH connection to "$HOST" successful"
         done

.github/actions/setup-k8s-env/action.yml

@@ -41,7 +41,7 @@ runs:
         IP_ADDR=$(ansible -i inventory/hosts -u $ANSIBLE_USER -m shell -a "curl -s ifconfig.me" $K8S_TARGET | grep -oP '(\d+\.){3}\d+')
 
         # Forward the k8s API server port to localhost
-        ssh -f -N -L 16443:localhost:16443 $ANSIBLE_USER@$ANSIBLE_HOST
+        ssh -f -N -L 16443:localhost:16443 "$ANSIBLE_USER@$ANSIBLE_HOST"
 
         # Override the kube config file to use localhost
         sed -i "s/server: https:\/\/$IP_ADDR:16443/server: https:\/\/localhost:16443/g" ~/.kube/config