Add env check for jmx integrations

[coignetp]

What does this PR do?

Add the possibility to use ddev env check integ env for JMX integration.
It uses datadog-agent jmx list [...]. The default list method is matching, but it can be set using --jmx-list.

Motivation

Using ddev env check jmx_integ py37-latest for JMX integration like the classic ones.

Additional Notes

Review checklist (to be filled by reviewers)

• PR title must be written as a CHANGELOG entry (see why)
• Files changes must correspond to the primary purpose of the PR as described in the title (small unrelated changes should have their own PR)
• PR must have changelog/ and integration/ labels attached
• Feature or bugfix must have tests
• Git history must be clean
• If PR adds a configuration option, it must be added to the configuration file.

[codecov]

Codecov Report

Merging #4146 into master will decrease coverage by 4.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4146      +/-   ##
==========================================
- Coverage   82.24%   78.17%   -4.07%     
==========================================
  Files         148       34     -114     
  Lines        7517     1306    -6211     
  Branches      876      134     -742     
==========================================
- Hits         6182     1021    -5161     
+ Misses       1150      254     -896     
+ Partials      185       31     -154

[FlorianVeaux]

Looks good, just checked it on hive and works as expected 👍