Format the listeners API fields

[HJianBo]

There are some an incompatible changes, but we had to fix the incorrect API formatting as soon as possible. A summary changes:

1. Using the standard status and node_status data format for GET /listeners and GET /gateway/<name>/listeners.

   Before this changes, the MQTT listener APIs returned these fields as:

   "status": {
       "current_connections": 0,
       "max_connections": 4096000
    },
   "node_status": {
       "emqx@emqx-core-2.emqx-headless.default.svc.cluster.local": {
         "current_connections": 0,
         "max_connections": 512000
        }
   }

   The Gateway listener API returned as:

   "node_status": [
      { "current_connections": 0,
         "max_connections": 1024000,
         "node": "emqx@emqx-core-2.emqx-headless.default.svc.cluster.local"
       },
    ]
   // No `status` field

   In this PR, we unify these fields both listeners API as:

    "status": {
      "current_connections": 0,
      "max_connections": 102400,
      "running": true
    },
    "node_status": [ {
      "node": "emqx@127.0.0.1",
      "status": {
        "current_connections": 0,
        "max_connections": 102400,
        "running": true}
     }],

2. Ensure the bind output style

   • Configured as 1883, printed as :1883
   • Configured as 0.0.0.0:1883, printed as :1883
   • Configured as 127.0.0.1:1883, printed as 127.0.0.1:1883
   • Configured as ::1:1883, printed as [::1]:1883
   • Configured as [::1]:1883, printed as [::1]:1883

3. Move running field into status and node_status field for Gateway listeners API

4. Add type, name fields for MQTT listeners API

[coveralls]

Pull Request Test Coverage Report for Build 2738981724

• 29 of 41 (70.73%) changed or added relevant lines in 6 files are covered.
• 43 unchanged lines in 19 files lost coverage.
• Overall coverage increased (+0.02%) to 78.781%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
apps/emqx/src/emqx_listeners.erl	7	10	70.0%
apps/emqx_gateway/src/emqx_gateway_api_listeners.erl	15	19	78.95%
apps/emqx_management/src/emqx_mgmt_api_listeners.erl	3	8	37.5%

Files with Coverage Reduction	New Missed Lines	%
apps/emqx_conf/src/emqx_conf_schema.erl	1	92.31%
apps/emqx_gateway/src/mqttsn/emqx_sn_channel.erl	1	72.92%
apps/emqx_management/src/emqx_mgmt_api_listeners.erl	1	73.25%
apps/emqx_management/src/emqx_mgmt_util.erl	1	13.79%
apps/emqx_slow_subs/src/emqx_slow_subs.erl	1	77.42%
apps/emqx/src/emqx_authentication_config.erl	1	84.75%
apps/emqx/src/emqx_broker.erl	1	81.87%
apps/emqx/src/emqx_channel.erl	1	85.85%
apps/emqx/src/emqx_config_handler.erl	1	96.34%
apps/emqx/src/emqx_listeners.erl	1	82.96%

Totals
Change from base Build 2736432390:	0.02%
Covered Lines:	20855
Relevant Lines:	26472

---

💛 - Coveralls