jira: add labels.update_mode replace|merge for label updates - #5443

jira: add labels.update_mode replace|merge for label updates#5443

Drenovik wants to merge 3 commits into

prometheus:mainprometheus/alertmanager:mainfrom

Drenovik:jira-labels-update-modeDrenovik/alertmanager:jira-labels-update-modeCopy head branch name to clipboard