Prevent apk-in-apex from being registered under wrong apex

Without this fix, an apk-in-apex located in path
/apex/com.android.mediaprovider will be added as apk-in-apex
for com.android.media too, just because they have the same
prefix.

Added a info log too to make it easier to understand which apk-in-apex
is being registered under which apex.

Bug: 170640411
Test: Manual testing
Change-Id: Idc989ac84777589b4bdd72012833cdbdab7e872c
Merged-In: Idc989ac84777589b4bdd72012833cdbdab7e872c
(cherry picked from commit c45a426e8e6343922ff9c6f7380e4e7bbdf360a1)
(cherry picked from commit 58cd8bc29e092fc6c13f893c1cd497e7c3b75bdb)
1 file changed