cmsdk: Exclude compiled 'cyanogenmod/library' java package.

  Since aar's contain the raw resource to be compiled into the
  consumer package, having the compiled java from the resources
  inside of the java archive can lead to multiple instances
  of the class in the target package during compilation.

  Avoid that scenario by excluding the compile 'cyanogenmod/library'
  package from the final aar.

TICKET: CYNGNOS-2305
Change-Id: I3b40205f4c2173ecd059e034312ed18dc9c6de34
(cherry picked from commit 62604cf5)