Revert "[FUEL-493] added Haproxy http checks for APIs and cinder API in HA mode"

This reverts commit c551290add093f532df1b9dc78a31e5503fd2c2f due to
regression.
Revert "Fixed Cinder bind_host address for HA mode."

This reverts commit 3918090e29341364bc836253a42e86ce9e4872c6 due to
regression.
Merge pull request #339 from aglarendil/develop

Revert commits due to regressions