planex-dev: install redhat-lsb-core and add 'vagrant' to group 'mock'
planex-dev: install redhat-lsb-core and add 'vagrant' to group 'mock'

These are needed by xenserver-core

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@citrix.com>

djs55/cloudstack-dev-vms,djs55/cloudstack-dev-vms,djs55/cloudstack-dev-vms,djs55/cloudstack-dev-vms