AppDynamics custom resources

Previously, if a user wanted to override the app-agent-config.xml file
in their application, it was impossible to do so.  This change adds
the copy_resources() functionality to the AppDynamics framework.  This
functionality now allows a user to add files to
resources/app_dynamics_agent and have those files overlayed on the
framework's sandbox.

[#67769548]

Author: nebhale

docs/framework-app_dynamics_agent.md

@@ -33,6 +33,9 @@ The framework can be configured by modifying the [`config/app_dynamics_agent.yml
 | `repository_root` | The URL of the AppDynamics repository index ([details][repositories]).
 | `version` | The version of AppDynamics to use. Candidate versions can be found in [this listing][].
 
+### Additional Resources
+The framework can also be configured by overlaying a set of resources on the default distribution.  To do this, add files to the `resources/app_dynamics_agent` directory in the buildpack fork.  For example, to override the default `app-agent-config.xml` add your custom file to `resources/app_dynamics_agent/conf/app-agent-config.xml`.
+
 
 [`config/app_dynamics_agent.yml`]: ../config/app_dynamics_agent.yml
 [AppDynamics Service]: http://www.appdynamics.com

java-buildpack.iml

@@ -282,7 +282,7 @@
     <orderEntry type="library" scope="PROVIDED" name="parser (v2.1.7, rbenv: 1.9.3-p545) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="powerpack (v0.0.9, rbenv: 1.9.3-p545) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="rainbow (v2.0.0, rbenv: 1.9.3-p545) [gem]" level="application" />
-    <orderEntry type="library" scope="PROVIDED" name="rake (v10.2.0, rbenv: 1.9.3-p545) [gem]" level="application" />
+    <orderEntry type="library" scope="PROVIDED" name="rake (v10.2.2, rbenv: 1.9.3-p545) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="redcarpet (v3.1.1, rbenv: 1.9.3-p545) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="rspec (v3.0.0.beta2, rbenv: 1.9.3-p545) [gem]" level="application" />
     <orderEntry type="library" scope="PROVIDED" name="rspec-core (v3.0.0.beta2, rbenv: 1.9.3-p545) [gem]" level="application" />

lib/java_buildpack/framework/app_dynamics_agent.rb

@@ -27,6 +27,7 @@ class AppDynamicsAgent < JavaBuildpack::Component::VersionedDependencyComponent
       # (see JavaBuildpack::Component::BaseComponent#compile)
       def compile
         download_zip false
+        @droplet.copy_resources
       end
 
       # (see JavaBuildpack::Component::BaseComponent#release)