When a java_sdk_library module is added, both impl jar and permission
xml files are packaged together.
For example, when a java_sdk_library "foo" is listed, following two
entries will be in an APEX package.
/javalibs/foo.jar
/etc/permissions/foo.xml
Bug: 145474221
Test: m com.android.cronet
deapexer list com.android.cronet.apex
Change-Id: If5883c02255e9309f20810b1532d3fbe73bf4e95