Remove libdrmframework.so dependency from libdatasource.so

Name changes:
ClearFileSource -> FileSource
ClearMediaHTTP -> MediaHTTP
FileSource -> PlayerServiceFileSource
MediaHTTP -> PlayerServiceMediaHTTP

PlayerServiceXXX are able to handle OMA(forward-lock) files and now
moved to media/libmediaplayerservice/datasource since they only work
on mediaserver process.

Bug: 142567168
Test: build and DrmTest

Change-Id: I9292dba33d149efe17cf566017dcce1710cc8c88