Add missing property descriptions. #5

Job	Run time
Check if database upgrade tests should be run	26s
check_branch	1s
Build Openfire from source (11, zulu)	18m 43s
Build Openfire from source (17, zulu)	15m 24s
Execute Connectivity CI tests	40s
Generate DEB artifact	1m 5s
Test MySQL Upgrades	1m 15s
Execute aioxmpp-based CI tests	1m 41s
Test Postgres Upgrades	1m 1s
Execute Smack-based CI tests	1m 0s
Test SQL Server Upgrades	1m 13s
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 30s

Provide feedback