feat(opensearch): add RFC1123Subdomain to avoid clashes

Signed-off-by: Christopher Haar <christopher.haar@upbound.io>

Author: haarchri

examples/opensearch/v1beta1/domain.yaml

@@ -9,10 +9,10 @@ metadata:
     meta.upbound.io/example-id: opensearch/v1beta1/domain
   labels:
     testing.upbound.io/example-name: example
-  name: example-${Rand.RFC1123Subdomain}
+  name: example
 spec:
   forProvider:
-    domainName: example-domain-name-${Rand.RFC1123Subdomain}
+    domainName: ${Rand.RFC1123Subdomain}
     engineVersion: OpenSearch_1.0
     region: us-west-1
     clusterConfig: