vttestserver should only pass a BindAddressGprc if one is passed in (… #545

Job	Run time
Build and push lite (latest)	4m 40s
Build and push vttestserver (mysql80)	1m 40s
Build and push lite (percona80)	4m 40s
Build and push (bullseye, vtadmin)	1m 24s
Build and push (bullseye, vtorc)	53s
Build and push (bullseye, vtgate)	44s
Build and push (bullseye, vttablet)	53s
Build and push (bullseye, mysqlctld)	47s
Build and push (bullseye, mysqlctl)	49s
Build and push (bullseye, vtctl)	42s
Build and push (bullseye, vtctlclient)	55s
Build and push (bullseye, vtctld)	1m 21s
Build and push (bullseye, vtctldclient)	43s
Build and push (bullseye, logrotate)	26s
Build and push (bullseye, logtail)	25s
Build and push (bullseye, vtbackup)	51s
Build and push (bullseye, vtexplain)	44s
Build and push (bookworm, vtadmin)	1m 14s
Build and push (bookworm, vtorc)	48s
Build and push (bookworm, vtgate)	56s
Build and push (bookworm, vttablet)	49s
Build and push (bookworm, mysqlctld)	50s
Build and push (bookworm, mysqlctl)	54s
Build and push (bookworm, vtctl)	55s
Build and push (bookworm, vtctlclient)	47s
Build and push (bookworm, vtctld)	1m 47s
Build and push (bookworm, vtctldclient)	55s
Build and push (bookworm, logrotate)	31s
Build and push (bookworm, logtail)	31s
Build and push (bookworm, vtbackup)	51s
Build and push (bookworm, vtexplain)	44s
Slack Notification if failed	2s
	35m 11s

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