Remove hard dependency on python version in RPM

- Don't let rpmbuild to add dependencies automatically,
  which causes a hard dependency on python version used
  to build RPM.
- suppress byte compiling

Fixes: MN-2588
Merge pull request #225 from tomoe/master

Remove hard dependency on python version in RPM
Add Load Balancer neutron client handlers

Signed-off-by: Joe Mills <joe@midokura.com>
Merge pull request #228 from JoeMido/lbaas_h

Add Load Balancer neutron client handlers
Change no tenant configuration as an empty string

This patch change the mapping of the empty tenant from None to the empty
string.

This resolves MN-2389.

Signed-off-by: Taku Fukushima <tfukushima@midokura.com>
Assign password to correct var

Signed-off-by: Joe Mills <joe@midokura.com>
Merge pull request #230 from tomoe/master

Change no tenant configuration as an empty string
VxGW: introduce addVtepTunnelZone to application

Signed-off-by: Galo Navarro <galo@midokura.com>