Update path in AppGateway Ingress Controller for File service

File service has undergone a change in its URL versioning, as discussed in this issue - . The context path for file-azure has been updated from api/file/v2 to api/file. This change needs to be mirrored in the path in AppGate Ingress Controller as well, otherwise it will not be able to pick up the correct path for APIs like {FILE_HOST}/api/file/swagger-ui.html.