Install dhcp6relay-dbg into the debug version of sonic-dhcp-relay container

Signed-off-by: Saikrishna Arcot <[email protected]>

Author: saiarcot895

rules/docker-dhcp-relay.mk

@@ -9,7 +9,7 @@ $(DOCKER_DHCP_RELAY)_PATH = $(DOCKERS_PATH)/$(DOCKER_DHCP_RELAY_STEM)
 $(DOCKER_DHCP_RELAY)_DEPENDS += $(ISC_DHCP_RELAY) $(SONIC_DHCPMON) $(SONIC_DHCP6RELAY) $(LIBSWSSCOMMON) 
 
 $(DOCKER_DHCP_RELAY)_DBG_DEPENDS = $($(DOCKER_CONFIG_ENGINE_BUSTER)_DBG_DEPENDS)
-$(DOCKER_DHCP_RELAY)_DBG_DEPENDS += $(ISC_DHCP_RELAY_DBG)
+$(DOCKER_DHCP_RELAY)_DBG_DEPENDS += $(ISC_DHCP_RELAY_DBG) $(SONIC_DHCP6RELAY_DBG)
 
 $(DOCKER_DHCP_RELAY)_DBG_IMAGE_PACKAGES = $($(DOCKER_CONFIG_ENGINE_BUSTER)_DBG_IMAGE_PACKAGES)