fix confusing error message

[vladmsnk]

When I try to connect to Oauth provider with wrong url I got wrong error message. In example I use localhost:4444 instead of 127.0.0.1.

Error message:
error="failed to create OAuth service: failed to create OIDC provider: oidc: issuer did not match the issuer returned by provider, expected \"http://localhost:4444\" got \"http://127.0.0.1:4444\""

But should be:
error="failed to create OAuth service: failed to create OIDC provider: oidc: issuer did not match the issuer returned by provider, expected \"http://127.0.0.1:4444\" got \"http://localhost:4444\""

When i change host to http://127.0.0.1:4444, everything works correctly and got no errors

[vladmsnk]

@ericchiang Hi! could you check this PR please?

[ericchiang]

Hey! Sorry, but seems like the correct ordering. If the URL you provide to this library is http://localhost:4444, and the server returns something different, then the library expects localhost but got a different value.

Maybe "configured to expect localhost, but server returned 127.0.0.1" would be clearer?