deploy: Add configure scripts for Ganeti

Since we deploy Ganeti with packages, in order to be able
to run qa from source we should run configure with the
same options that debian builds the packages. Add new helper
scripts (configure-2.8 and configure-2.10) that do this
(for stable-2.8 and stable-2.10 respectively).

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>