Treat java libraries in classpath fragments as directly in apex

Coverage is applied to java libraries that are directly in an apex.
Mark java libraries that are in an apex through a bootclasspath_fragment
or a systemserverclasspath_fragment as directly in the apex by
implementing CopyDirectlyInAnyApexTag on the dependency tags used for
their contents.

Bug: 183759446
Test: TestApexJavaCoverage
Change-Id: I0116f5f415083b5194000988cb257454ef115200
Merged-In: I0116f5f415083b5194000988cb257454ef115200
(cherry picked from commit c33e5216)