Improve gateway startup stability when custom virtual workspace pod is unreachable #379

Job	Run time
pipe / lint / lint	1m 35s
pipe / auto-labeler / auto-labeler	6s
pipe / testSource / test	24s
pipe / dockerBuild / docker	1m 46s
pipe / createVersion	0s
pipe / dockerBuildAndPush	0s
pipe / updateVersion	-1s
	3m 50s

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