openstudio_meta install_gems certificate verify failed for rubygems

[rHorsey]

reported by @ljbrackney:

lbrackne-30017s:OpenStudio-server lbrackne$ ../ruby/bin/ruby ./bin/openstudio_meta install_gems
git version 2.10.1 (Apple Git-78)
ERROR:  Could not find a valid gem ‘bundler’ (= 1.12.5), here is why:
        Unable to download data from https://rubygems.org/ - SSL_connect returned=1 errno=0 state=error: certificate verify failed (https://api.rubygems.org/specs.4.8.gz)
E, [2018-02-12T15:04:24.476358 #46045] ERROR -- : System call ‘/Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/ruby/bin/ruby /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/ruby/bin/gem install --no-env-shebang bundler -v 1.12.5 && /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/ruby/bin/ruby /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/OpenStudio-server/gems/bin/bundle config build.nokogiri --use-system-libraries --with-xml2-lib=/usr/lib --with-xml2-include=/usr/include && /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/ruby/bin/ruby /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/OpenStudio-server/gems/bin/bundle install --without development test docker && /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/ruby/bin/ruby /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/OpenStudio-server/gems/bin/bundle update && /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/ruby/bin/ruby /Applications/OpenStudio-2.4.1/ParametricAnalysisTool.app/Contents/Resources/OpenStudio-server/gems/bin/rake assets:precompile’ failed

[rHorsey]

This often is a result of the network refusing 443 (https) traffic. This often happens to NREL employees. To fix this please run

$ gem sources -r https://rubygems.org/
https://rubygems.org/ removed from sources

$ gem sources -a http://rubygems.org/
https://rubygems.org is recommended for security over http://rubygems.org/
Do you want to add this insecure source? [yn]  y
http://rubygems.org/ added to sources

[rHorsey]

Also, this issue and other related to local system configuration issues are discussed in https://github.com/NREL/OpenStudio-server/wiki/Common-Local-Configuration-Issues