Roer cannot read private keys that have passphrases

[tanelso2]

While trying to run roer against our Spinnaker instance, I hit this error:

tls: failed to parse private key
loading x509 keypair
github.com/spinnaker/roer/spinnaker.DefaultHTTPClientFactory
	/Users/tnelson/go/src/github.com/spinnaker/roer/spinnaker/http.go:55

(Rest of stacktrace omitted for brevity's sake)

This is related to the use of tls.LoadX509KeyPair as mentioned here: golang/go#10181

roer should have an option to specify a passphrase for key files that need them.

[sdpoueme]

We are facing the same issue with our spinnaker setup: roer --certPath spinnaker.pem --keyPath client.key --v app list DEBU[0000] Configuring TLS with pem cert/key pair FATA[0000] creating spinnaker client: creating http client from context: loading x509 keypair: tls: failed to parse private key