Add --reuse-sock flag so browser IDEs can reuse another SSH connections SSH_AUTH_SOCK #1668

Job	Run time
test-e2e (build)	11m 51s
test-e2e (ide)	11m 12s
test-e2e (integration)	11m 3s
test-e2e (machine)	9m 52s
test-e2e (machineprovider)	11m 0s
test-e2e (provider)	11m 12s
test-e2e (proxyprovider)	12m 47s
test-e2e (ssh)	11m 22s
test-e2e-windows (build)	1m 26s
test-e2e (up)	13m 7s
test-e2e (up-docker)	12m 4s
test-e2e-windows (ide)	1s
test-e2e-windows (ssh)	1s
test-e2e (up-podman)	10m 41s
test-e2e-windows (up-docker)	1s
test-e2e (up-docker-compose)	12m 41s
test-e2e-windows (up-docker-build)	1s
test-e2e (up-docker-build)	11m 49s
test-e2e-windows (up-docker-compose)	1s
test-e2e (up-docker-compose-build)	11m 13s
test-e2e (context)	10m 17s
	2h 53m 42s

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