Fix hook to force bundler to resolve with ruby version
Fix hook to force bundler to resolve with ruby version

Bundler does not use the running ruby version for resolving dependencies
unless explicit specified in Gemfile. This will abort install on MRI 2.1
as bundler tries to install activesupport 5.0 that requires Ruby 2.2.
This hack sets the ruby version in Gemfile to current running ruby
version in CI.

jgraichen/redmine_dashboard,jgraichen/redmine_dashboard,jgraichen/redmine_dashboard