Add ScaledTimeout to scale EventuallyWithT timeouts by 2x on CI,
consistent with the existing PeerSyncTimeout (60s/120s) and
dockertestMaxWait (300s/600s) conventions.
Add assertCurlSuccessWithCollect and assertCurlFailWithCollect helpers
following the existing *WithCollect naming convention.
assertCurlFailWithCollect uses CurlFailFast internally for aggressive
timeouts, avoiding wasted retries when expecting blocked connections.
Apply these to the three flakiest ACL tests:
- TestACLTagPropagation: swap NetMap and curl verification order so
the fast NetMap check (confirms MapResponse arrived) runs before
the slower curl check. Use curl helpers and scaled timeouts.
- TestACLTagPropagationPortSpecific: use curl helpers and scaled
timeouts.
- TestACLHostsInNetMapTable: scale the 10s EventuallyWithT timeout.
Updates #3125
a7edcf3b0f