Annotated Servlets do not work with quickstart disabled.

[gregw]

A webapp with annotated servlets does not deploy correctly if quickstart is disabled. The annotations appear to not be scanned

[ludoch]

related to #122

the current maven plugin delegates all the process to the gcloud tool which bundles the current Jetty 9.2 used for the current Java7 Jetty compat runtime. We need to keep this and this will not evolve a lot until we remove it entirely. Meanwhile we need to find the SDK story for the new Jetty9.3/Java8 runtime. For internal reasons, we cannot have 2 Jetty binaries inside Google. What we can do for that is first make it work with Maven and add the logic in the Maven plugin that could easily be modified to: 1/ depend on Maven Jetty9.3.x artifacts (especially quickstart) 2/ depend on a modified jetty compat library defined in this git project to export the defaultweb.xml as a resource of the compat library 3/ modify the maven plugin to call the quickstart logic with the correct webdefault.xml defined here (async-branch) only when we can detect that the user intents to use the new compat runtime, not the one bundled in the cloud SDK. I've done a proto for that, and it seems doable.

For the appengine-java-vm-runtime artifact: diff.txt

[ludoch]

And for the gcloud maven plugin (https://github.com/GoogleCloudPlatform/gcloud-maven-plugin) , that would be: d2.txt