[Build] Fix the docker image docker-dhcp-relay:latest not found issue (#13048)

Why I did it
It is to fix the broadcom build failure, it is caused by the build image docker-dhcp-relay:latest not found.

2022-12-14T00:09:57.5464893Z [ FAIL LOG START ] [ target/docker-dhcp-relay.gz-load ]
2022-12-14T00:09:57.5466036Z Attempting docker image lock for docker-dhcp-relay load
2022-12-14T00:09:57.5467113Z Obtained docker image lock for docker-dhcp-relay load
2022-12-14T00:09:57.5468206Z Loading docker image target/docker-dhcp-relay.gz
2022-12-14T00:09:57.5469361Z Loaded image: docker-dhcp-relay:internal.65852159-11ad82a07a
2022-12-14T00:09:57.5470686Z Tagging docker image docker-dhcp-relay:latest as docker-dhcp-relay-sonic:latest
2022-12-14T00:09:57.5471997Z Error response from daemon: No such image: docker-dhcp-relay:latest
2022-12-14T00:09:57.5473122Z [  FAIL LOG END  ] [ target/docker-dhcp-relay.gz-load ]
2022-12-14T00:09:57.5539792Z make: *** [slave.mk:1180: target/docker-dhcp-relay.gz-load] Error 1
2022-12-14T00:09:57.5540958Z make: *** Waiting for unfinished jobs....
The image had been built succeeded

2022-12-13T17:01:59.9046935Z [ finished ] [ target/docker-eventd.gz ] 
2022-12-13T17:02:00.4947165Z [ building ] [ target/docker-dhcp-relay.gz ] 
2022-12-13T17:02:00.6688627Z /sonic/dockers/docker-dhcp-relay/cli-plugin-tests /sonic
2022-12-13T17:02:41.1123955Z /sonic
2022-12-13T17:07:04.1786069Z [ finished ] [ target/docker-dhcp-relay.gz ] 
But it was tagged by another value:

Obtained docker image lock for docker-dhcp-relay save
Tagging docker image docker-dhcp-relay-sonic:latest as docker-dhcp-relay:internal.65852159-11ad82a07a
Saving docker image docker-dhcp-relay:internal.65852159-11ad82a07a
Released docker image lock for docker-dhcp-relay save
Removing docker image docker-dhcp-relay-sonic:latest
Untagged: docker-dhcp-relay-sonic:latest
target/docker-dhcp-relay.gz
File /dpkg_cache/docker-dhcp-relay.gz-2ddfa01a109ca69b7621f1a-450bae36026d9dee62646f2.tgz saved in cache 
[ CACHE::SAVED ] /dpkg_cache/docker-dhcp-relay.gz-2ddfa01a109ca69b7621f1a-450bae36026d9dee62646f2.tgz
How I did it
When the feature SONIC_CONFIG_USE_NATIVE_DOCKERD_FOR_BUILD not enabled, always save as the latest tag, not use the specify version.
The version is dynamic, it is changed when a new commit checked in, but the image of docker-dhcp-relay is not necessary to change.

Author: xumia

slave.mk

@@ -455,7 +455,7 @@ export vs_build_prepare_mem=$(VS_PREPARE_MEM)
 # $(1) => Docker name
 
 define docker-get-tag
-$(shell [ ! -z $(filter $(1).gz,$(SONIC_PACKAGES_LOCAL)) ] && echo $(SONIC_IMAGE_VERSION) || echo latest)
+$(shell [ ! -z $(filter $(1).gz,$(SONIC_PACKAGES_LOCAL)) ] && [ x$(SONIC_CONFIG_USE_NATIVE_DOCKERD_FOR_BUILD) == x"y" ] && echo $(SONIC_IMAGE_VERSION) || echo latest)
 endef
 
 # $(call docker-image-save,from,to)