Fix typo in agent driver
Fix typo in agent driver

compatiblity  => compatibility

TrivialFix

Change-Id: I2ba432c1df2bd91521b10d387563054ad7ddf748

NaohiroTamura/ironic,bacaldwell/ironic,pshchelo/ironic,openstack/ironic,NaohiroTamura/ironic,pshchelo/ironic,SauloAislan/ironic,SauloAislan/ironic,bacaldwell/ironic,openstack/ironic