InternalOAuthError: Failed to fetch user profile from using v3 API - passport-gitlab2

https://sentry.gitlap.com/gitlab/backend/issues/194998/

InternalOAuthError: Failed to fetch user profile

{
	oauthError: {
		data: {
			"error":"API V3 is no longer supported. Use API V4 instead."
		}, 
		statusCode: 410
	}
}

The GitLab v3 API was removed, https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18970. Deployed in GitLab 11.0 RC5 on 2018-6-7, https://gitlab.slack.com/archives/C8PKBH3M5/p1528359031000529

We need to update https://www.npmjs.com/package/passport-gitlab2 to use GitLab API v4

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As reported by

• @tommy.morgan
• https://gitter.zendesk.com/agent/tickets/8527
• https://gitter.zendesk.com/agent/tickets/8528

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Some Slack discussion, https://gitlab.slack.com/archives/C3W3PSR88/p1528391245000456