Add a way to know if DemotePrimary is blocked and send it in the heal… #520

Job	Run time
Build and push lite (latest)	4m 24s
Build and push vttestserver (mysql80)	2m 26s
Build and push lite (percona80)	4m 43s
Build and push (bullseye, vtadmin)	1m 21s
Build and push (bullseye, vtorc)	42s
Build and push (bullseye, vtgate)	40s
Build and push (bullseye, vttablet)	45s
Build and push (bullseye, mysqlctld)	42s
Build and push (bullseye, mysqlctl)	48s
Build and push (bullseye, vtctl)	41s
Build and push (bullseye, vtctlclient)	50s
Build and push (bullseye, vtctld)	1m 38s
Build and push (bullseye, vtctldclient)	39s
Build and push (bullseye, logrotate)	27s
Build and push (bullseye, logtail)	28s
Build and push (bullseye, vtbackup)	50s
Build and push (bullseye, vtexplain)	47s
Build and push (bookworm, vtadmin)	1m 20s
Build and push (bookworm, vtorc)	42s
Build and push (bookworm, vtgate)	49s
Build and push (bookworm, vttablet)	47s
Build and push (bookworm, mysqlctld)	43s
Build and push (bookworm, mysqlctl)	45s
Build and push (bookworm, vtctl)	59s
Build and push (bookworm, vtctlclient)	54s
Build and push (bookworm, vtctld)	1m 35s
Build and push (bookworm, vtctldclient)	45s
Build and push (bookworm, logrotate)	24s
Build and push (bookworm, logtail)	41s
Build and push (bookworm, vtbackup)	47s
Build and push (bookworm, vtexplain)	43s
Slack Notification if failed	0s
	34m 45s

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