Bind Apache to single IP so Haproxy can bind also

compressed_ha scenario calls apache class which by default binds Apache
to all available IP addresses. This prevents Haproxy from binding port
80 on a different IP address on that same server.

Change-Id: I0efbac6258914a377e3fc8626e35d3a3998e17ee
Closes-Bug: #1317209
Merge pull request #82 from CiscoSystems/bugs/1317209

Bind Apache to single IP so Haproxy can bind also