Refactor check_allow_management_verbs
Refactor check_allow_management_verbs

Convert check_allow_management_verbs() to use a dictionary mapping of
verbs to minimum versions.

Change-Id: I56a9df5d0272a21d9e387f5e634c383b1fc8d46b

hpproliant/ironic,dims/ironic,openstack/ironic,redhat-openstack/ironic,pshchelo/ironic,naterh/ironic,Tan0/ironic,ionutbalutoiu/ironic,SauloAislan/ironic,devananda/ironic,pshchelo/ironic,dims/ironic,SauloAislan/ironic,bacaldwell/ironic,NaohiroTamura/ironic,ionutbalutoiu/ironic,openstack/ironic,bacaldwell/ironic,NaohiroTamura/ironic