Redundant OpenID variables for the generic OpenID (SSO) provider in run-console script

[gbarbon]

Describe the bug
The run-console script is checking for the presence of five variables in order to trigger the generic OpenID Connect (SSO) provider. However, only CONSOLE_URL and OPENID_JWT_ISSUER must actually be checked, since the other variables are retrieved trough the well-known configuration document, and should only be provided in particular cases.

To Reproduce
n/a

Expected behavior
The generic provider must be triggered only with CONSOLE_URL and OPENID_JWT_ISSUER.

Screenshots
n/a

Version of Kapua
1.3.0-SNAPSHOT

Type of deployment
[x] Local Vagrant deployment
[x] Docker
[x] Openshift (in its variants)
[ ] Others

Main component affected
[x] Console (in case of console please report info on which browser you encountered the problem)
[ ] REST API
[ ] Message Broker
[ ] - Others

Additional context
n/a