Some people that work behind corporate http proxies are reporting failures when they try to connect to github via the blue ocean creation flow. It is believed this is as the connection does not take into account the proxy as setup by jenkins. 

https://github.com/jenkinsci/blueocean-plugin/blob/master/blueocean-github-pipeline/src/main/java/io/jenkins/blueocean/blueocean_github_pipeline/GitHubFactory.java#L22

This shoudl be changed to use the Jenkins proxy configuration 

This change may need to be backported to 1.1 or 1.2 (TBD)