Add config to explicitly enable loading all github groups

Follow-up for #1102.

Gitlab connector should not require the api scope.

Fixes #1347.

remove incomplete mysql and cockroachdb support

update go-ldap, improve errors

Issue #1184 - Github connector now returns a full group list when no org is specified

fix bogus conformance failure due to time zones

this failed on my machine due to the unexported 'loc' field of the time
structure - it was nil in one and set to a ton of tiemzone data in the
other. instead let's just compare the unix timestamp value and zero it
out for the struct comparison.

Issue #1263 - Render error message provided by connector if user authentication failed

Signed-off-by: Stephan Renatus <srenatus@chef.io>

Signed-off-by: Stephan Renatus <srenatus@chef.io>

Signed-off-by: Stephan Renatus <srenatus@chef.io>

point users to storage/RBAC docs

allow it to disable CRD creation

add Refresh() to mock passwordConnector

 *: vendor golint to prevent upstream changes from breaking the build

golint has updated or dropped support for old Go versions several times,
causing breaks in our build. Vendor it locally to prevent this.

*: update go version

Add mention of `scopes` parameter in OIDC doc

Fix broken link to Bitbucket Cloud documentation

.travis.yml: fix golint import