Raise MissingParameterValue when validating glance info
Raise MissingParameterValue when validating glance info

Make use of the MissigParameterValue exception when validating the
image info from glance.

Change-Id: Ic403ef47586922ef12c111aa191b0b181028d60d

faizan-barmawer/openstack_ironic,dims/ironic,naterh/ironic,Tehsmash/ironic,bacaldwell/ironic,pshchelo/ironic,ionutbalutoiu/ironic,SauloAislan/ironic,ramineni/myironic,rackerlabs/ironic,devananda/ironic,pshchelo/ironic,openstack/ironic,naototty/vagrant-lxc-ironic,openstack/ironic,supermari0/ironic,dims/ironic,bacaldwell/ironic,rdo-management/ironic,hpproliant/ironic,NaohiroTamura/ironic,Tan0/ironic,redhat-openstack/ironic,debayanray/ironic_backup,SauloAislan/ironic,froyobin/ironic,ionutbalutoiu/ironic,NaohiroTamura/ironic,naototty/vagrant-lxc-ironic