started perform
Completed execute_convergence with tests
updated effect to test parallel inspection
Merge branch 'master' into execute-converge

Conflicts:
	otter/test/test_convergence.py
not using `s` - lint fix
Separate check for nodes in post data

since it can be in any order but content is unique
Merge branch 'master' into execute-converge

Conflicts:
	otter/convergence.py
	otter/test/test_convergence.py
	requirements.txt

Also fixed checking nodes in
otter.test.test_convergence.ExecConvergenceTests.test_success
fixed declarations occured during conflict
Merge branch 'master' into execute-converge

Conflicts:
	otter/convergence.py
	otter/test/test_convergence.py
better name - thanks @radix
Merge pull request #796 from rackerlabs/execute-converge

AS-424: Execute converge