HDDS-2629. Ozone CLI: CreationTime/modifyTime of volume/bucket/key in…

[xiaoyuyao]

…fo are not formatted.

What changes were proposed in this pull request?

Format JSON output of volume/bucket/key info properly in a readable format.

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-2629

How was this patch tested?

unit test and run ozone CLI in docker-compose and validate the output like below

`bash-4.2$ ozone sh vol info /vol1
{
"metadata" : { },
"name" : "vol1",
"admin" : "hadoop",
"owner" : "hadoop",
"creationTime" : "2019-11-27T06:08:15.546Z",
"acls" : [ {
"type" : "USER",
"name" : "hadoop",
"aclScope" : "ACCESS",
"aclList" : [ "ALL" ]
}, {
"type" : "GROUP",
"name" : "users",
"aclScope" : "ACCESS",
"aclList" : [ "ALL" ]
} ],
"quota" : 1152921504606846976
}

bash-4.2$ ozone sh bucket info /vol1/bucket1
{
"metadata" : { },
"volumeName" : "vol1",
"name" : "bucket1",
"storageType" : "DISK",
"versioning" : false,
"creationTime" : "2019-11-27T06:08:21.148Z",
"encryptionKeyName" : null
}

bash-4.2$ ozone sh key info /vol1/bucket1/key1
{
"volumeName" : "vol1",
"bucketName" : "bucket1",
"name" : "key1",
"dataSize" : 3813,
"creationTime" : "2019-11-27T06:08:33.206Z",
"modificationTime" : "2019-11-27T06:08:35.558Z",
"replicationType" : "RATIS",
"replicationFactor" : 3,
"ozoneKeyLocations" : [ {
"containerID" : 1,
"localID" : 103208380870754304,
"length" : 3813,
"offset" : 0
} ],
"metadata" : { },
"fileEncryptionInfo" : null
}
`

[adoroszlai]

Thanks @xiaoyuyao for working on this. I have a few minor code comments below.

[adoroszlai]

Thanks @xiaoyuyao for updating the patch.

[anuengineer]

@adoroszlai Thanks for the review. @xiaoyuyao Thanks for the contribution. I have committed this patch to the master branch.