Add supervisor cert/key to rotate list #205

Job	Run time
build / Build	7m 32s
E2E Tests (startup)	8m 49s
E2E Tests (s3)	5m 9s
Docker Tests (basics)	1m 20s
E2E Tests (btrfs)	4m 18s
Docker Tests (bootstraptoken)	58s
E2E Tests (externalip)	5m 50s
Docker Tests (cacerts)	1m 1s
E2E Tests (privateregistry)	6m 5s
Docker Tests (lazypull)	1m 5s
E2E Tests (wasm)	4m 35s
Docker Tests (upgrade)	26s
	47m 8s

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