The build.gradle in the templates should not pull in unversioned, remote code

[plambert]

From src/main/resources/templates/script-plugin/filecopier/build.gradle.template:

apply from: 'https://raw.githubusercontent.com/rundeck-plugins/build-zip/master/build.gradle'

Every time we update that file in github, it is no longer possible for users to build their plugins from the same original source.

Also, if their build system does not have external internet access, the build can never succeed, unless they figure out how to cache this code somewhere that gradle will find and use it--I'm not sure if that's possible?

We should, as part of building this tool, include a static, versioned copy of all required code to ensure that the results of what it builds are deterministic and cannot be compromised without leaving a clear trace.