[docker-orchagent]: ADD PFC Broadcom recommended MMU Settings (#1136)

This commit adds new code to support PFC and broadcom recommended
MMU setting for PFC feature.

Verified by running checking the hardware setting after the switch
was booted.

Signed-off-by: Harish Venkatraman <Harish_Venkatraman@dell.com>

dockers/docker-orchagent/swssconfig.sh

@@ -33,6 +33,8 @@ if [ "$HWSKU" == "Force10-S6000" ]; then
     SWSSCONFIG_ARGS+="td2.32ports.buffers.json td2.32ports.qos.json "
 elif [ "$HWSKU" == "Force10-S6000-Q32" ]; then
     SWSSCONFIG_ARGS+="td2.32ports.buffers.json td2.32ports.qos.json "
+elif [ "$HWSKU" == "Force10-S6100" ]; then
+    SWSSCONFIG_ARGS+="th.64ports.buffers.json th.64ports.qos.json "
 elif [ "$HWSKU" == "Arista-7050-QX32" ]; then
     SWSSCONFIG_ARGS+="td2.32ports.buffers.json td2.32ports.qos.json "
 elif [[ "$HWSKU" == "ACS-MSN27"* ]]; then