TabletServer: execute DDLs without timeout #1016

Job	Run time
Set push variable	1s
Build and push vttestserver (mysql80)	1m 56s
Build and push lite (latest)	2m 18s
Build and push lite (percona80)	2m 0s
Build and push (bullseye, vtadmin)	1m 15s
Build and push (bullseye, vtorc)	34s
Build and push (bullseye, vtgate)	40s
Build and push (bullseye, vttablet)	39s
Build and push (bullseye, mysqlctld)	29s
Build and push (bullseye, mysqlctl)	37s
Build and push (bullseye, vtctl)	38s
Build and push (bullseye, vtctlclient)	38s
Build and push (bullseye, vtctld)	1m 26s
Build and push (bullseye, vtctldclient)	38s
Build and push (bullseye, logrotate)	14s
Build and push (bullseye, logtail)	16s
Build and push (bullseye, vtbackup)	48s
Build and push (bullseye, vtexplain)	24s
Build and push (bookworm, vtadmin)	1m 14s
Build and push (bookworm, vtorc)	31s
Build and push (bookworm, vtgate)	32s
Build and push (bookworm, vttablet)	26s
Build and push (bookworm, mysqlctld)	43s
Build and push (bookworm, mysqlctl)	41s
Build and push (bookworm, vtctl)	39s
Build and push (bookworm, vtctlclient)	37s
Build and push (bookworm, vtctld)	1m 8s
Build and push (bookworm, vtctldclient)	43s
Build and push (bookworm, logrotate)	25s
Build and push (bookworm, logtail)	26s
Build and push (bookworm, vtbackup)	33s
Build and push (bookworm, vtexplain)	32s
	24m 41s

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