main/dhcp: fix vrf support

dhcrelay init.d overrides start(), due to this the built in vrf support
in openrc does not work. Due to this dhcrelay init.d must handle the
vrf support.
7 jobs for !14880 with dhcrelay-vrf in 9 minutes and 4 seconds (queued for 1 second)
latest detached
Status Job ID Name Coverage
  Lint
failed #253022
docker-alpine x86_64 allowed to fail
lint

00:00:22

 
  Build
passed #253027
docker-alpine ci-build aarch64
build-aarch64

00:08:23

passed #253028
docker-alpine ci-build armv7
build-armv7

00:08:01

passed #253026
docker-alpine ci-build ppc64le
build-ppc64le

00:08:39

passed #253025
docker-alpine ci-build s390x
build-s390x

00:06:15

passed #253024
docker-alpine ci-build x86
build-x86

00:05:37

passed #253023
docker-alpine ci-build x86_64
build-x86_64

00:04:21

 
Name Stage Failure
failed
lint Lint
No job log