[init_cfg.json] Add new FEATURE and CONTAINER_FEATURE tables (#4137)

* [init_cfg.json] Add a new table CONTAINER_FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Update the content of table CONTAINER_FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Use the template to generate the table
CONTAINER_FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Add a new table FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Change the order of container names according to
alphabetical order.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Change the dhcp_relay container name and add rest-api.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

files/build_templates/init_cfg.json.j2

@@ -16,5 +16,21 @@
             "{{crm_res}}_high_threshold": "85"{% if not loop.last %},{% endif -%}
 {% endfor %}
         }
+    },
+    "FEATURE": {
+{%- for feature in ["sflow", "telemetry"] %}
+        "{{feature}}": {
+            "status": "disabled"
+        }{% if not loop.last %},{% endif -%}
+{% endfor %}
+    },
+    "CONTAINER_FEATURE": {
+{%- for container in ["bgp", "database", "dhcp_relay", "lldp", "pmon", "radv", "rest-api", "sflow",
+                      "snmp", "swss", "syncd", "teamd", "telemetry"] %}
+        "{{container}}": {
+            "auto_restart": "disabled",
+            "high_mem_alert": "disabled"
+        }{% if not loop.last %},{% endif -%}
+{% endfor %}
     }
 }