change AndExpr to contain arbitrary many predicates #915

Job	Run time
Set push variable	1s
Build and push vttestserver (mysql80)	2m 6s
Build and push lite (latest)	2m 9s
Build and push lite (percona80)	2m 13s
Build and push (bullseye, vtadmin)	1m 3s
Build and push (bullseye, vtorc)	29s
Build and push (bullseye, vtgate)	35s
Build and push (bullseye, vttablet)	33s
Build and push (bullseye, mysqlctld)	40s
Build and push (bullseye, mysqlctl)	34s
Build and push (bullseye, vtctl)	38s
Build and push (bullseye, vtctlclient)	42s
Build and push (bullseye, vtctld)	1m 13s
Build and push (bullseye, vtctldclient)	40s
Build and push (bullseye, logrotate)	14s
Build and push (bullseye, logtail)	27s
Build and push (bullseye, vtbackup)	37s
Build and push (bullseye, vtexplain)	35s
Build and push (bookworm, vtadmin)	1m 14s
Build and push (bookworm, vtorc)	26s
Build and push (bookworm, vtgate)	25s
Build and push (bookworm, vttablet)	26s
Build and push (bookworm, mysqlctld)	38s
Build and push (bookworm, mysqlctl)	31s
Build and push (bookworm, vtctl)	46s
Build and push (bookworm, vtctlclient)	35s
Build and push (bookworm, vtctld)	1m 17s
Build and push (bookworm, vtctldclient)	40s
Build and push (bookworm, logrotate)	25s
Build and push (bookworm, logtail)	31s
Build and push (bookworm, vtbackup)	41s
Build and push (bookworm, vtexplain)	45s
	24m 49s

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