Add caching of App/Pkg data & use faster way to retrieve this data

Add caching of App/Pkg data & use faster way to retrieve this data

In client side, this data needs to be retrieved only once for given client.

PkgMgr is checked only from askuser-notification daemon context, otherwise
AUL environment variables/AUL API is called to get data needed on client side.

This optimization should reduce API call time for ppm_check by ~60%

Change-Id: I5a9238113b062df551b73e3af7e52f6b13643c81