fix path to bosh ssh key in healthcheck script
fix path to bosh ssh key in healthcheck script

Signed-off-by: Julian Hjortshoj <a84af1ff40fcfa3bc4844358f827e17a8b38c426@emc.com>
Signed-off-by: Connor Braa <e624947c8d30070ca3f5f65daa9bdf76de21947b@pivotal.io>

cloudfoundry-incubator/cephfs-bosh-release,cloudfoundry-incubator/cephfs-bosh-release