8236: Add support for Jolokia discovery

[skarsaune]

Jolokia comes with a discovery mechanism. It is helpful to make use of this to automatically populate the JVM browser, alongside local JVM and other discovery mechanisms.

https://jolokia.org/reference/html/manual/jolokia_protocol.html#discovery

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Progress

• [x] Commit message must refer to an issue
• [ ] Change must be properly reviewed (1 review required, with at least 1 Committer)

Issue

• JMC-8236: Add support for Jolokia discovery (Enhancement - P4)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jmc.git pull/570/head:pull/570
$ git checkout pull/570

Update a local copy of the PR:
$ git checkout pull/570
$ git pull https://git.openjdk.org/jmc.git pull/570/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 570

View PR using the GUI difftool:
$ git pr show -t 570

Using diff file

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https://git.openjdk.org/jmc/pull/570.diff

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