add configs for staging env

environments/staging/config/api_config.json

@@ -0,0 +1,5 @@
+{
+  "url": "@ApiURLStaging@",
+  "username": "@lcUsernameStaging@",
+  "password": "@lcPasswordStaging@"
+}

environments/staging/config/queue_config.json

@@ -0,0 +1,7 @@
+{
+  "username": "@lcQueUsernameStaging@",
+  "password": "@lcQuePasswordStaging@",
+  "host": "@lcQueHostStaging@",
+  "port": "@lcQuePortStaging@",
+  "queue": "queueDocContentTypeImport"
+}