Description of problem:
All the common services like Quota, NFS of tiered volume is tagged inside the cold bricks tag.
It would be good if the tier volume gluster volume status xml output has the same tag structure as that of non tier volume xml output.


Version-Release number of selected component (if applicable):
glusterfs-3.7.5-0.18

How reproducible:
Always

Steps to Reproduce:
1. Create tier volume
2. Run gluster volume status --xml

Actual results:

[root@node31 upstream]# gluster volume status tiervol --xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<cliOutput>
  <opRet>0</opRet>
  <opErrno>0</opErrno>
  <opErrstr/>
  <volStatus>
    <volumes>
      <volume>
        <volName>tiervol</volName>
        <nodeCount>10</nodeCount>
        <hotBricks>
          <node>
            <hostname>10.70.46.140</hostname>
            <path>/bricks/brick2/tiervol_tier1</path>
            <peerid>8e684b4a-9be7-45e8-8a19-506ec7184eb6</peerid>
            <status>1</status>
            <port>49163</port>
            <ports>
              <tcp>49163</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>19078</pid>
          </node>
          <node>
            <hostname>10.70.46.174</hostname>
            <path>/bricks/brick2/tiervol_tier0</path>
            <peerid>9ff4f219-ae5f-49b8-9255-b6e986053d8d</peerid>
            <status>1</status>
            <port>49167</port>
            <ports>
              <tcp>49167</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>23585</pid>
          </node>
        </hotBricks>
        <coldBricks>
          <node>
            <hostname>10.70.46.174</hostname>
            <path>/bricks/brick2/tiervol_brick0</path>
            <peerid>9ff4f219-ae5f-49b8-9255-b6e986053d8d</peerid>
            <status>1</status>
            <port>49165</port>
            <ports>
              <tcp>49165</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>23400</pid>
          </node>
          <node>
            <hostname>10.70.46.140</hostname>
            <path>/bricks/brick1/tiervol_brick1</path>
            <peerid>8e684b4a-9be7-45e8-8a19-506ec7184eb6</peerid>
            <status>1</status>
            <port>49161</port>
            <ports>
              <tcp>49161</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>18928</pid>
          </node>
          <node>
            <hostname>10.70.46.174</hostname>
            <path>/bricks/brick3/tiervol_brick2</path>
            <peerid>9ff4f219-ae5f-49b8-9255-b6e986053d8d</peerid>
            <status>1</status>
            <port>49166</port>
            <ports>
              <tcp>49166</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>23418</pid>
          </node>
          <node>
            <hostname>10.70.46.140</hostname>
            <path>/bricks/brick2/tiervol_brick3</path>
            <peerid>8e684b4a-9be7-45e8-8a19-506ec7184eb6</peerid>
            <status>1</status>
            <port>49162</port>
            <ports>
              <tcp>49162</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>18946</pid>
          </node>
          <node>
            <hostname>NFS Server</hostname>
            <path>localhost</path>
            <peerid>9ff4f219-ae5f-49b8-9255-b6e986053d8d</peerid>
            <status>1</status>
            <port>2049</port>
            <ports>
              <tcp>2049</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>23605</pid>
          </node>
          <node>
            <hostname>Quota Daemon</hostname>
            <path>localhost</path>
            <peerid>9ff4f219-ae5f-49b8-9255-b6e986053d8d</peerid>
            <status>1</status>
            <port>N/A</port>
            <ports>
              <tcp>N/A</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>23811</pid>
          </node>
          <node>
            <hostname>NFS Server</hostname>
            <path>10.70.46.140</path>
            <peerid>8e684b4a-9be7-45e8-8a19-506ec7184eb6</peerid>
            <status>1</status>
            <port>2049</port>
            <ports>
              <tcp>2049</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>19099</pid>
          </node>
          <node>
            <hostname>Quota Daemon</hostname>
            <path>10.70.46.140</path>
            <peerid>8e684b4a-9be7-45e8-8a19-506ec7184eb6</peerid>
            <status>1</status>
            <port>N/A</port>
            <ports>
              <tcp>N/A</tcp>
              <rdma>N/A</rdma>
            </ports>
            <pid>19260</pid>
          </node>
        </coldBricks>
        <tasks>
          <task>
            <type>Tier migration</type>
            <id>ebdb671e-8371-4507-8be2-96c5db0a49ba</id>
            <status>1</status>
            <statusStr>in progress</statusStr>
          </task>
        </tasks>
      </volume>
    </volumes>
  </volStatus>
</cliOutput>

Expected results:


Additional info: