IsReachable() needs to give detailed error message.
IsReachable() needs to give detailed error message.

Signed-off-by: ylvmw <1179a3151612afdef63ebcb7058bcd562d1a5963@vmware.com>

helm/helm,helm/helm,adamreese/deployment-manager,michelleN/deployment-manager,adamreese/helm,michelleN/deployment-manager,adamreese/deployment-manager,bacongobbler/helm,adamreese/deployment-manager,adamreese/deployment-manager,adamreese/deployment-manager,michelleN/deployment-manager,michelleN/deployment-manager,bacongobbler/helm,adamreese/helm