RFR: 7455: Add support for jolokia JMX service connection [v30]

[Martin Skarsaune]

> Setting back for review. The azure problem requires a fix in Jolokia.
> 
> Make use of support for JMX service connection in jolokia 1.7.0 and later to connect to JVMs over this protocol.

Martin Skarsaune has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 31 commits:

 - Merge remote-tracking branch 'origin/master' into jolokia-support
 - JMC-7455: Prepare for merge
 - JMC-7455: Upgrade jolokia to 1.7.2
 - JMC-7455: Handle unlocking of credentials if set
 - JMC-7455: No longer rely on selflink (as in https://github.com/rhuss/jolokia/pull/489)
 - JMC-7455: Handle credentials not yet present
 - JMC-7455: Cosmetic: Undo formatting of copyright that got messed up
 - JMC-7455: Upgrade to 9.0.0
 - JMC-7455: Secure credentials. Make it possible to test outside of maven
 - JMC-7455: Verifications and more authorization tests
 - ... and 21 more: https://git.openjdk.org/jmc/compare/0cabfbca...41501e7d

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Changes: https://git.openjdk.org/jmc/pull/332/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=332&range=29
  Stats: 4604 lines in 82 files changed: 4603 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jmc/pull/332.diff
  Fetch: git fetch https://git.openjdk.org/jmc pull/332/head:pull/332

PR: https://git.openjdk.org/jmc/pull/332