HDDS-2197. Extend SCMCLI Topology command to print node Operational States

[sodonnel]

The scmcli topology command only consider the node health (healthy, stale or dead). With decommission and maintenance stages, we need to also consider the operational states and display them with this command.

The current topology command prints details in the format:

State = HEALTHY
 IpAddress(hostName)    networkLocation
 IpAddress(hostName) networkLocation
 IpAddress(hostName) networkLocation

State = STALE
  ...

State = DEAD
  ... 

Alternatively, it prints the details ordered by network location

State = HEALTHY
Location: somelocation
 ipAddress(hostName)
 ipAddress(hostName)
 ipAddress(hostName)
Location: otherlocation
 ipAddress(hostName)
 ipAddress(hostName)
 ipAddress(hostName) 

State = STALE
Location: someLocation
 ...
 ...

In this PR, I propose we simple add the operational state into the existing output, and keep the ordering and formatting as is:

State = HEALTHY
 IpAddress(hostName) IN_SERVICE networkLocation
 IpAddress(hostName) IN_SERVICE networkLocation
 IpAddress(hostName) DECOMMISSIONING networkLocation

State = STALE
 ...

State = DEAD
 ...  

Or

State = HEALTHY
Location: somelocation
 ipAddress(hostName) IN_SERVICE
 ipAddress(hostName) IN_SERVICE
 ipAddress(hostName) DECOMMISSIONED
Location: otherlocation
 ipAddress(hostName) IN_SERVICE
 ipAddress(hostName) IN_MAINTENANE
 ipAddress(hostName) IN_SERVIE

State = STALE
Location: someLocation
 ...
 ...

[elek]

+1

Tested and worked well:

ozone scmcli printTopology
State = HEALTHY
 192.168.240.2(ozone_datanode_2.ozone_default)    IN_SERVICE    /default-rack
 192.168.240.5(ozone_datanode_3.ozone_default)    IN_SERVICE    /default-rack
State = DEAD
 192.168.240.6(ozone_datanode_1.ozone_default)    IN_SERVICE    /default-rack
bash-4.2$ 

There is one commented out part, we discussed it offline that it will be re-enabled in one of the next patches.

[anuengineer]

+1. LGTM. Thanks for getting this done.