add credentials ref to linodeVPC and linodeFirewall templates (#497)

Co-authored-by: Rahul Sharma <rahsharm@akamai.com>

Author: rahulait

templates/infra/linodeFirewall.yaml

@@ -6,6 +6,8 @@ metadata:
     cluster.x-k8s.io/cluster-name: ${CLUSTER_NAME}
   name: ${CLUSTER_NAME}
 spec:
+  credentialsRef:
+    name: ${CLUSTER_NAME}-credentials
   enabled: ${LINODE_FIREWALL_ENABLED:=false}
   inboundPolicy: DROP
   inboundRules:

templates/infra/linodeVPC.yaml

@@ -6,6 +6,8 @@ metadata:
   labels:
     cluster.x-k8s.io/cluster-name: ${CLUSTER_NAME}
 spec:
+  credentialsRef:
+    name: ${CLUSTER_NAME}-credentials
   region: ${LINODE_REGION}
   subnets:
     - ipv4: 10.0.0.0/8