Replace 'assertTrue(a in b)' with 'assertIn(a, b)' and 'assertFalse(a in b)' with 'assertNotIn(a, b)'
Replace 'assertTrue(a in b)' with 'assertIn(a, b)' and 'assertFalse(a in
b)' with 'assertNotIn(a, b)'

1. Replace 'assertTrue(a in b)' with 'assertIn(a, b)'.
2. Replace 'assertTrue(a not in b)' with 'assertNotIn(a, b)'.
3. Replace 'assertFalse(a in b)' with 'assertNotIn(a, b)'.

Trivial fix.

Change-Id: Ibe8665e60b2709eb4cc1f85ad4f6c04908182fc2

openstack/tooz,openstack/tooz