Removing sorted() function from assertEqual()

Removing unnecessary sorted() function from assertEqual() function
calls in functions used for sorting and pagination testing

Using sorted() breaks sorting tests objective which is to test sorting.
This is causing every unit test using this functions
(_test_list_with_sort, _test_list_with_pagination, _test_list_with_pagination_reverse)
for sorting tests to always succeed

Switched the parameters for assertEqual() function within the fixed code to meet
its signature - assertEqual(self, expected, observed, message='')

Test neutron.tests.unit.vmware.vshield.test_lbaas_plugin.TestLoadbalancerPlugin.test_list_vips
was succeeding because of this bug, although it should fail. It failed after the bug was fix.
Test was fixed.

Change-Id: Ia36b81d9a7fd32cae3b567ac1899b56481eb62ce
Closes-Bug: #1355251
Merge "Removing sorted() function from assertEqual()"