[devices]: Add led plugin for Arista 7060CX-32S and 7260CX3-64 (#945)

* Bump sonic-platform-modules-arista submodule

* Allow image specific mount option for containers

* Add led plugin for DCS-7060CX-32S

* Add led plugin for DCS-7260CX3-64

Author: Staphylo

device/arista/x86_64-arista_7060_cx32s/plugins/led_control.py

@@ -0,0 +1,6 @@
+try:
+    import arista.utils.sonic_leds as arista_leds
+except ImportError, e:
+    raise ImportError (str(e) + "- required module not found")
+
+LedControl = arista_leds.getLedControl()

device/arista/x86_64-arista_7260cx3_64/plugins/led_control.py

@@ -0,0 +1,6 @@
+try:
+    import arista.utils.sonic_leds as arista_leds
+except ImportError, e:
+    raise ImportError (str(e) + "- required module not found")
+
+LedControl = arista_leds.getLedControl()

platform/broadcom/sonic-platform-modules-arista

@@ -12,4 +12,7 @@ $(DOCKER_PLATFORM_MONITOR)_CONTAINER_NAME = pmon
 $(DOCKER_PLATFORM_MONITOR)_RUN_OPT += --net=host --privileged -t
 $(DOCKER_PLATFORM_MONITOR)_RUN_OPT += -v /etc/sonic:/etc/sonic:ro
 
+# Mount Arista python library on Aboot images to be used by plugins
+$(DOCKER_PLATFORM_MONITOR)_aboot_RUN_OPT += -v /usr/lib/python2.7/dist-packages/arista:/usr/lib/python2.7/dist-packages/arista:ro
+
 $(DOCKER_PLATFORM_MONITOR)_BASE_IMAGE_FILES += sensors:/usr/bin/sensors

rules/docker-platform-monitor.mk

@@ -400,6 +400,7 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_INSTALLERS)) : $(TARGET_PATH)/% : .platform
 		export docker_image="$(docker)"
 		export docker_image_name="$(basename $(docker))"
 		export docker_container_name="$($(docker)_CONTAINER_NAME)"
+		$(eval $(docker)_RUN_OPT += $($(docker)_$($*_IMAGE_TYPE)_RUN_OPT))
 		export docker_image_run_opt="$($(docker)_RUN_OPT)"
 		j2 files/build_templates/docker_image_ctl.j2 > $($(docker)_CONTAINER_NAME).sh
 		if [ -f files/build_templates/$($(docker)_CONTAINER_NAME).service.j2 ]; then