interface: Implement ip_vrf_forwarding property
interface: implement standby_delay_reload
implement basic hsrp standby group support in the model
scoped_value: improve style
switch: sort includes
switch: add hsrp_standby_group param and accessor
hsrp_standby_group: implement type and provider
hsrp: remove debug output
switch: fix hsrp_standby_group lookup
hsrp_standby_group: add title parsing
Imporve parse_title; add tests
hsrp: rename all parent_interface and standby_group properties to this
hsrp: more fixes and tests
hsrp: test andfix parsing of the preempt property
hsrp/preempt: fix commands
interface: add ip_address property