[7.x] [Backport] create ActiveMQ Metricbeat module (#14788)

* [Metricbeat] Create ActiveMQ module (#14580)

* Generate bootstrap for broker, queue, topic

* Update generated files

* Define metricsets in disabler

* Prepare docker image for ActiveMQ

* Define jolokia endpoint in disabler

* Convert to lightweight module

* Remove downloaded installation bundle

* Fill sample data.json

* Refactor metricset fields

* Update docs

* Fix: do not expose ActiveMQ port

* Fix: mage fmt update

* Dockerfile: define healthcheck

* Move module contents to x-pack

* Fix: move docker-compose definition to x-pack

* Add basic system test

* Fix: update docs

* System tests: topic metrics collected

* Fix: mage fmt update

* System tests: queue, topic metrics collected

* Update docs

* Fix: use compose_host

* Assert that fields are documented

* Fix: typo in metricbeat/docs/modules/activemq.asciidoc

Co-Authored-By: kaiyan-sheng <[email protected]>

* Add CHANGELOG.next entry

* Fix: mage fmt update

* Fix: import stomp in the function scope (#14703)

* Fix: use metrics_path instead of path in system tests (#14690)

* [Metricbeat] Create Kibana dashboards for ActiveMQ module (#14655)

* Kibana dashboard: ActiveMQ broker overview

* Fix: mage fmt update

* Fix: invalid dashboard JSON

* Kibana dashboard: ActiveMQ queues and topics overview

* Add dashboard screenshots

* Enable time units, pct in dashboards

* Adjust PR reference in CHANGELOG.next

* Fix: mage fmt update

CHANGELOG.next.asciidoc

@@ -495,6 +495,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Release aws ebs metricset as GA. {pull}14312[14312] {issue}14060[14060]
 - Add Kafka JMX metricsets. {pull}14330[14330]
 - Add metrics to envoyproxy server metricset and support for envoy proxy 1.12. {pull}14416[14416] {issue}13642[13642]
+- Add module for ActiveMQ. {pull}14788[14788]
 
 *Packetbeat*
 

libbeat/tests/system/requirements.txt

@@ -30,3 +30,4 @@ websocket-client==0.47.0
 parameterized==0.7.0
 jsondiff==1.1.2
 semver==2.8.1
+stomp.py==4.1.22