Release of cisco-network-node-utils v1.2.0

@saqibraza

ACL (platforms: Nexus 3k and Nexus 9k)
- acl (@saqibraza)
- ace (@yjyongz)
- remark ace (@bansalpradeep)
EVPN (platforms: Nexus 3k and Nexus 9k)
- evpn_vni (@andish)
Fabric Path (platforms: Nexus 7k)
- fabricpath_global (@dcheriancisco)
- fabricpath_topology (@dcheriancisco)
Feature
- feature (@robert-w-gries)
Interface (platforms: Nexus 3k, Nexus 5k, Nexus 6k, Nexus 7k and Nexus 9k)
- interface_channel_group (@chrisvanheuveln)
- interface_portchannel (@saichint)
- interface_service_vni (@chrisvanheuveln)
PIM (platforms: Nexus 3k and Nexus 9k)
- pim (@smigopal)
- pim_group_list (@smigopal)
- pim_rp_address (@smigopal)
Port Channel (platforms: Nexus 3k, Nexus 5k, Nexus 6k, Nexus 7k and Nexus 9k)
- interface_channel_group (@chrisvanheuveln)
- interface_portchannel (@saichint)
- portchannel_global (@saichint)
SNMP (platforms: Nexus 3k, Nexus 5k, Nexus 6k, Nexus 7k and Nexus 9k)
- snmpnotification (@tphoney)
VDC (platforms: Nexus 7k)
- vdc (@chrisvanheuveln)
VPC (platforms: Nexus 3k, Nexus 5k, Nexus 6k, Nexus 7k and Nexus 9k)
- vpc (@dcheriancisco)
VRF (platforms: Nexus 3k, Nexus 5k, Nexus 6k, Nexus 7k and Nexus 9k)
- vrf_af (@chrisvanheuveln)
VXLAN (platforms: Nexus 9k)
- overlay_global (@alok-aggarwal)
- vxlan_vtep (@dcheriancisco)
- vxlan_vtep_vni (@mikewiebe)

AAA
- aaa_authentication_login
- aaa_authentication_login_service
- aaa_authentication_service
BGP
- bgp
- bgp_af
- bgp_af_neighobr
- bgp_neighbor_af
COMMAND_CONFIG
- command_config (config_parser)
DOMAIN
- dns_domain
- domain_name
- name_server
INTERFACE
- interface
NTP
- ntp_config
- ntp_server
OSPF
- interface_ospf
- ospf
- ospf_vrf
RADIUS
- radius_global
SNMP
- snmp_community
- snmp_group
- snmp_notification_receiver
- snmp_server
- snmp_user
SYSLOG
- syslog_server
- syslog_setting
TACACS
- tacacs_server
- tacacs_server_group
- tacacs_server_host
VLAN
- vlan

Cisco::UnsupportedError exception class, raised when a command is explicitly marked as unsupported on a particular class of nodes.
Extend bgp with attributes:
- disable_policy_batching, disable_policy_batching_ipv4, disable_policy_batching_ipv6
- event_history_cli, event_history_detail, event_history_events, event_history_periodic
- fast_external_fallover
- flush_routes
- isolate
- neighbor_down_fib_accelerate
- route_distinguisher
Extend bgp_af with attributes:
- default_metric
- distance_ebgp, distance_ibgp, distance_local
- inject_map
- suppress_inactive
- table_map
Extend interface with attributes:
- fabric_forwarding_anycast_gateway
- ipv4_acl_in, ipv4_acl_out, ipv6_acl_in, ipv6_acl_out
- ipv4_address_secondary, ipv4_arp_timeout
- vlan_mapping
- vpc_id, vpc_peer_link
- switchport mode fabricpath
Extend vrf with attributes:
- vni
Extend vlan with attribute:
- mode

Major refactor and enhancement of CommandReference YAML files:
- Added support for auto_default, default_only, kind, and multiple
- Added filtering by product ID (/N7K/) and by client type (cli_nexus)
- CommandReference methods that do key-value style wildcard substitution now raise an ArgumentError if the result is empty (because not enough parameters were supplied).

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