- enhance logging throughout the codebase
- all packages at pkg/ should never log
or perform log.Fatal() instead packages
should return errors through functions.
- simplified various user, group mapping
and removed redundant functions.
- deprecate older flags like --tls-certificate
--tls-key and --tls-ca as we do not use
them anymore, keep them for backward compatibility
for some time.
This PR adds support for oidc in mcs, to enable idp
authentication you need to pass the following environment variables and
restart mcs.
```
MCS_IDP_URL=""
MCS_IDP_CLIENT_ID=""
MCS_IDP_SECRET=""
MCS_IDP_CALLBACK=""
```
