Adding oVirt verbs related to host's api

Those verbs are used by ovirt-provision-plugin which introduced as part of feature [1]

[1] http://www.ovirt.org/Features/AdvancedForemanIntegration 
seems that the url is incorrect and has a redundant "add" verb. please retest it and fix if needed, I tried to use the url and got an error from oVirt.