Make system_server stubs consistent with other stubs

Include the module_api stubs in system_server one instead of
putting both of these jars on the classpath. Also rename it
to be in line with the other stubs.

Bug: 149293194
Test: m
Change-Id: I2a9318c8ae036edafac086687601fa73d9bf4678
Merged-In: I2a9318c8ae036edafac086687601fa73d9bf4678
(cherry picked from commit a49fb99d8cff85326bd9dd13e383c6cb6284dd3b)
1 file changed