Enable ZMQ between orchagent and syncd for smartswitch DPUs

 * Add device type to swss_vars template
 * Set redis communication mode to zmq_sync for DPU device type

Signed-off-by: Prabhat Aravind <paravind@microsoft.com>

Author: prabhataravind

dockers/docker-orchagent/orchagent.sh

@@ -30,7 +30,10 @@ fi
 
 # Set synchronous mode if it is enabled in CONFIG_DB
 SYNC_MODE=$(echo $SWSS_VARS | jq -r '.synchronous_mode')
-if [ "$SYNC_MODE" == "enable" ]; then
+DEVICE_TYPE=$(echo $SWSS_VARS | jq -r '.type')
+if [ "$DEVICE_TYPE" == "dpu" ]; then
+    ORCHAGENT_ARGS+="-z zmq_sync "
+elif [ "$SYNC_MODE" == "enable" ]; then
     ORCHAGENT_ARGS+="-s "
 fi
 

files/build_templates/swss_vars.j2

@@ -11,5 +11,6 @@
     "supporting_bulk_counter_groups": "{{ DEVICE_METADATA.localhost.supporting_bulk_counter_groups|join(',') }}",
     {% endif -%}
     "dual_tor": {% if DEVICE_METADATA.localhost.type == "ToRRouter" and DEVICE_METADATA.localhost.subtype == "DualToR" %}"enable"{% else %}"disable"{% endif %},
-    "dscp_remapping": {% if SYSTEM_DEFAULTS is defined and SYSTEM_DEFAULTS.tunnel_qos_remap is defined and SYSTEM_DEFAULTS.tunnel_qos_remap.status == "enabled" %}"enable"{% else %}"disable"{% endif %}
+    "dscp_remapping": {% if SYSTEM_DEFAULTS is defined and SYSTEM_DEFAULTS.tunnel_qos_remap is defined and SYSTEM_DEFAULTS.tunnel_qos_remap.status == "enabled" %}"enable"{% else %}"disable"{% endif %},
+    "type": "{{ DEVICE_METADATA.localhost.type }}"
 }