[minigraph] Add support for ipv4 dhcp_server in minigraph parser#16313

yaqiangz wants to merge 3 commits intosonic-net:mastersonic-net/sonic-buildimage:masterfrom

yaqiangz:azure-master_dhcp_server_ipv4_parseryaqiangz/sonic-buildimage:azure-master_dhcp_server_ipv4_parserCopy head branch name to clipboard