add connectionPolicy spec back to V5 SDK (#14088)

Author: ericshape

specification/sql/resource-manager/readme.md

@@ -43,6 +43,7 @@ APIs must only be added to this section when the API is publicly available in at
 ``` yaml $(tag) == 'package-composite-v5'
 input-file:
 - Microsoft.Sql/stable/2014-04-01/backups_legacy.json
+- Microsoft.Sql/stable/2014-04-01/connectionPolicies.json
 - Microsoft.Sql/stable/2014-04-01/dataMasking.json
 - Microsoft.Sql/stable/2014-04-01/geoBackupPolicies.json
 - Microsoft.Sql/stable/2014-04-01/metrics.json