Add info about functional tests run to docs
Add info about functional tests run to docs

Make doc with tests description up-to-date and provide there information
that describes how to run functional tests.

Partially implements bp functional-tests

Change-Id: Iad6b1d97a9c43dd24c2c6837bb71739a6f09bb1e

sniperganso/python-manilaclient,sniperganso/python-manilaclient