AppDynamics default node name
AppDynamics default node name

Previously the default node name for AppDynamics bound applications
was the instance index.  In certain views of AppDynamics, this wasn't
a clear enough indicator of what was running.  This change prepends
the instance index with the application name.

[#107769862][resolves #245]

nkatre/java-buildpack,nkatre/java-buildpack