Split TestApexAvailable into separate tests

Having multiple tests within one method makes debugging specific
failures more difficult so this change split the TestApexAvailable
test into multiple separate tests.

Bug: 153306490
Test: m nothing
Bug: 152762638
Merged-In: I2b2408ef515fd79c078686ef29a6ee8fb0407e7e
Change-Id: I2b2408ef515fd79c078686ef29a6ee8fb0407e7e