Add missing quote for AzureIngressProhibitedTarget (#1549)

Fixes #1548

Co-authored-by: Akshay Gupta <aksgupta@microsoft.com>

Author: pguyot

helm/ingress-azure/templates/crds.yaml

@@ -24,7 +24,7 @@ metadata:
   {{- end }}
 spec:
   {{- if .hostname }}
-  hostname: {{ .hostname }}
+  hostname: {{ .hostname | quote }}
   {{- end }}
   {{- if .paths }}
   paths:
@@ -35,4 +35,4 @@ spec:
 ---
 {{- end }}
 {{- end -}}
-{{- end -}}
+{{- end -}}