Fix power_state set to python object repr
Fix power_state set to python object repr

Change-Id: I096bc58bc1e6349d1a0f87dbad4b8ce40dc2cc09
Closes-Bug: #1237678

pshchelo/ironic,naototty/vagrant-lxc-ironic,JioCloud/ironic,ramineni/myironic,pshchelo/ironic,redhat-openstack/ironic,naototty/vagrant-lxc-ironic,supermari0/ironic,openstack/ironic,NaohiroTamura/ironic,Tehsmash/ironic,ionutbalutoiu/ironic,NaohiroTamura/ironic,dims/ironic,SauloAislan/ironic,ionutbalutoiu/ironic,varunarya10/ironic,debayanray/ironic_backup,bacaldwell/ironic,dims/ironic,froyobin/ironic,openstack/ironic,Tan0/ironic,rackerlabs/ironic,hpproliant/ironic,naterh/ironic,bacaldwell/ironic,devananda/ironic,faizan-barmawer/openstack_ironic,SauloAislan/ironic,rdo-management/ironic