IssueTracker

Currently for Java runtime, it is required to redeploy the whole code if there is a need to update the scaling setting. This will overwrite any old code that only needs their scaling settings to be changed.

Having an option to update only the current scaling setting (appengine-web.xml) for deployed applications with App Engine Standard (Java) will ease up this concern.

As of now, the Maven [1] and AppCfg [2] plugins used for deployments appears to be missing the "scaling setting only" deployment feature

[1] https://cloud.google.com/appengine/docs/standard/java/tools/maven-reference
[2] https://cloud.google.com/appengine/docs/standard/java/tools/appcfg-arguments#alternatives_to_appcfg_command_line_for_staging_configuration