HDDS-14518. Support open keys and MPU in ContainerToKeyMapping tool

[sarvekshayr]

What changes were proposed in this pull request?

Added a flag --in-progress to include open files/keys and multipart uploads in ContainerToKeyMapping tool.
When --onlyFileNames is set, then add FSO and OBS tags to differentiate the keys.

What is the link to the Apache JIRA

HDDS-14518

How was this patch tested?

Only shows files and keys from fileTable and keyTable respectively.

ozone debug om container-key-mapping --db /data/metadata/om.db --containers 1,2,3,4
{
  "containers" : {
    "1" : {
      "keys" : [ "/vol1/fso-bucket/dir1/file1" ],
      "totalKeys" : 1
    },
    "2" : {
      "keys" : [ "/vol1/obs-bucket/key1" ],
      "totalKeys" : 1
    },
    "3" : {
      "keys" : [ "[unreferenced] unreferencedFile" ],
      "totalKeys" : 1,
      "unreferencedKeys" : 1
    },
    "4" : {
      "keys" : [ ],
      "totalKeys" : 0
    }
  }
}

Shows open files and keys from openFileTable and openKeyTable respectively. Also includes multipart uploads info from multipartInfoTable

ozone debug om container-key-mapping --db /data/metadata/om.db --containers 1,2,3,4 --in-progress
{
  "containers" : {
    "1" : {
      "keys" : [ "/vol1/fso-bucket/dir1/file1" ],
      "openKeys" : [ "/vol1/fso-bucket/dir1/openFile" ],
      "totalKeys" : 2
    },
    "2" : {
      "keys" : [ "/vol1/obs-bucket/key1" ],
      "openKeys" : [ "/vol1/obs-bucket/openKey" ],
      "totalKeys" : 2
    },
    "3" : {
      "keys" : [ "[unreferenced] unreferencedFile" ],
      "openKeys" : [ ],
      "totalKeys" : 1,
      "unreferencedKeys" : 1
    },
    "4" : {
      "keys" : [ ],
      "openKeys" : [ "[mpu-part-1] /vol1/obs-bucket/mpuKey/test-upload-id/part-1", "[mpu-part-2] /vol1/obs-bucket/mpuKey/test-upload-id/part-2" ],
      "totalKeys" : 2
    }
  }
}

Show only file names

ozone debug om container-key-mapping --db /data/metadata/om.db --containers 1,2,3,4 --in-progress --onlyFileNames
{
  "containers" : {
    "1" : {
      "keys" : [ "[fso] file1" ],
      "openKeys" : [ "[fso] openFile" ],
      "totalKeys" : 2
    },
    "2" : {
      "keys" : [ "[obs] key1" ],
      "openKeys" : [ "[obs] openKey" ],
      "totalKeys" : 2
    },
    "3" : {
      "keys" : [ "[fso] unreferencedFile" ],
      "openKeys" : [ ],
      "totalKeys" : 1
    },
    "4" : {
      "keys" : [ ],
      "openKeys" : [ "[mpu-part-1-obs] mpuKey/test-upload-id/part-1", "[mpu-part-2-obs] mpuKey/test-upload-id/part-2" ],
      "totalKeys" : 2
    }
  }
}

[sreejasahithi]

Thanks @sarvekshayr for working on this.
Could you please reduce the duplication between processOpenFiles() and processOpenKeys().