Static class variables of FakeProcesses class were used in all test
methods. These variables were used in an uncoordinated way causing tests
to fail ocassionally, depending on the grouping and ordering of the
tests in the worker processes.
Code has been refactored and instance variables are used now in all test
methods.
Change-Id: Ic87a00883dc6cff128809f24164d95eb8c98ae91
Story: 2002848
Task: 22797
20b5b95f1e