service: Make oauth2-proxy depend on its socket

roles/service/tasks/oauth2_proxy.yaml

@@ -28,6 +28,8 @@
       OAUTH2_PROXY_SKIP_PROVIDER_BUTTON: "true"
       OAUTH2_PROXY_EMAIL_DOMAINS: "*"
       OAUTH2_PROXY_REVERSE_PROXY: "true"
+    container_requires:
+      - "{{ service_name }}-oauth2-proxy.socket"
     container_auto_update: "{{ service_auto_update }}"
 
 - name: Socket for OAuth2 Proxy for {{ service_name }}