Use functions from oslo.utils
Use functions from oslo.utils

Functions is_int_like(), generate_uuid() is_uuid_like() available in
oslo.utils, so we can use them from there and remove duplicates from
Ironic code

Change-Id: I2a319e633a835dbca6831148acaf425e4ff6a725

citrix-openstack-build/ironic-lib,openstack/ironic-lib,faizan-barmawer/elytics,faizan-barmawer/ironic-lib,NaohiroTamura/ironic-lib