issuer flag does not add the default port to the OIDC endpoints printout

[anaximand3r]

While running maSSO from an host with public exposure, e.g. EC2 machine, the --issuer flag does not force the endpoints print to include the proper port where they are reachable.

Example print:

./masso oidc --redirect-uri "https://STUFF.STUFF.com/sso/oidc/UUID/callback" --issuer http://ec2-STUFF.us-east-2.compute.amazonaws.com/
...
...
  ── OIDC Endpoints (on IdP port) ──────────────────────────────
  Discovery           :  http://ec2-STUFF.us-east-2.compute.amazonaws.com/well-known/openid-configuration
...

The URL is wrong as by default the endpoints are reachable at 8081.