RFR: 5705: Explain metaspace in rule results [v3]

[Suchita Chaturvedi]

> This enhancement updates MetaspaceOomRule and IncreasingMetaspaceLiveSetRule with the proper explanation and relevant real time values which were missing.

Suchita Chaturvedi has updated the pull request incrementally with one additional commit since the last revision:

  Updated IF-ELSE block and Metaspace case sensitive spelling

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Changes:
  - all: https://git.openjdk.org/jmc/pull/654/files
  - new: https://git.openjdk.org/jmc/pull/654/files/26ba259d..26daa9e1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jmc&pr=654&range=02
 - incr: https://webrevs.openjdk.org/?repo=jmc&pr=654&range=01-02

  Stats: 33 lines in 3 files changed: 9 ins; 9 del; 15 mod
  Patch: https://git.openjdk.org/jmc/pull/654.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/654/head:pull/654

PR: https://git.openjdk.org/jmc/pull/654