test(integration): Use watch to wait gateway and listeners set to not programmed in TestGatewayEssentials
#2504
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What this PR does / why we need it:
Use
client.Watchto watch events of gateways and catch the transient state of gateway and its listeners marked as not programmed.Which issue this PR fixes
Part of #2496
Special notes for your reviewer:
Note: In this PR I moved
WatchFortohelperspackage to run a more generic watch because thesetupWatchinenvtestcannot run on types other than our own CRD. The other types does not have our own methods so we have to use the generic method to run watches for them.PR Readiness Checklist:
Complete these before marking the PR as
ready to review:CHANGELOG.mdrelease notes have been updated to reflect significant changes