This updates LinkedIn connector to use the more recent v2 APIs. Necessary because v1 APIs are not able to retrieve email ids any more with the default permissions.

The API URLs are now different. Fetching the email address is now a separate call, made after fetching the profile details. The `r_basicprofile` permission is not needed any more, and `r_liteprofile` (which seems to be the one assigned by default) is sufficient.

The relevant API specifications are at:
- https://docs.microsoft.com/en-us/linkedin/shared/integrations/people/profile-api
- https://docs.microsoft.com/en-us/linkedin/shared/integrations/people/primary-contact-api
- https://docs.microsoft.com/en-us/linkedin/consumer/integrations/self-serve/migration-faq#how-do-i-retrieve-the-members-email-address

connectors/oidc: truely ignore "email_verified" claim if configured that way

Fixes #1455, I hope.
Signed-off-by: Stephan Renatus <srenatus@chef.io>

travis: replace golang 1.10 and 1.11 with 1.12

This is because I suspect the gofmt rules change between these versions to
make half the travis CI tests fail sometimes?
Signed-off-by: Stephan Renatus <srenatus@chef.io>

oidc: Make userID configurable

Add option in oidc to hit the optional userinfo endpoint

Some oauth providers return "thin tokens" which won't include all of the
claims requested. This simply adds an option which will make the oidc
connector use the userinfo endpoint to fetch all the claims.

server: add metrics for CORS handlers.

fix typo

Round out logging interface with functions for all levels

docs: update bitbucket permission requirements

Print appropriate error

gitlab: support for group whitelist, add tests

cmd/dex/serve.go: log static client name instead of ID

Signed-off-by: Yann Soubeyrand <yann.soubeyrand@gmx.fr>

Update Docker build/image

- Update build container to golang:1.12.4-alpine
- Update dex image to alpine:3.9
- Run dex as non-root user
Signed-off-by: Stephen Augustus <saugustus@vmware.com>

Add option to OIDC connecter to override email_verified to true

Fix typo.

Add logger interface and stop relying on Logrus directly

Fix typo

production users: add Banzai Cloud