Use static CNI bin dir #1086

Job	Run time
build / Build	7m 14s
E2E Tests (startup)	10m 27s
E2E Tests (s3)	8m 59s
Docker Tests (basics)	1m 8s
Docker Tests (bootstraptoken)	48s
E2E Tests (btrfs)	5m 12s
Docker Tests (cacerts)	54s
E2E Tests (externalip)	4m 39s
Docker Tests (compat)	2m 45s
E2E Tests (privateregistry)	6m 24s
Docker Tests (lazypull)	49s
E2E Tests (embeddedmirror)	5m 46s
Docker Tests (upgrade)	2m 26s
E2E Tests (wasm)	4m 25s
	1h 1m 56s

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