Merge pull request #19 from smusuvat/test_parallelism

move flow_tests under serial-scripts, minor..fix in imports for policy test.
Deleting the SIs after the static route test completes
Merge pull request #20 from ganeshahv/test_parallelism

Deleting the SIs after the static route test completes
new file for compute node config operations
fix imports
pep8 fixes & pull other changes that were made in r1.06 branch
pull changes from 1.06, provide way to retry setup verifications on failure
call service instance verification with retry
pull in fixes from r1.06