OF-2717: Rework Jetty 12 plugin documentation #3367

Job	Run time
check_branch	1s
Build Openfire from source (17, zulu)	15m 21s
Build Openfire from source (21, zulu)	15m 4s
Check if database upgrade tests should be run	7s
Execute Connectivity CI tests	33s
Generate DEB artifact	7m 59s
Execute aioxmpp-based CI tests	1m 50s
Test MySQL Upgrades	0s
Test Postgres Upgrades	0s
Execute Smack-based CI tests	1m 7s
Test SQL Server Upgrades	0s
Check if Docker Hub secrets exist	1s
Publish to Maven	0s
Publish to Docker Hub	0s
Test tagged images published to Docker Hub	0s
	42m 3s

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