rpm/configure: Explicitly install createrepo
rpm/configure: Explicitly install createrepo

Installing mock on CentOS 6.5 pulls in createrepo_c.  Install
the old createrepo explicitly so we can still use it.

Signed-off-by: Euan Harris <c3b6e83069c8e9e3af49a38fec6026be89559638@citrix.com>

simonjbeaumont/planex,djs55/planex,djs55/planex,simonjbeaumont/planex,simonjbeaumont/planex,djs55/planex