File gemrc of Package ruby-common

--- 
:benchmark: false
:install: --format-executable --no-user-install
install: --format-executable --no-user-install
:backtrace: true
:update_sources: true
:format_executable: true
:verbose: true
:update: --format-executable --no-user-install
update: --format-executable --no-user-install
:bulk_threshold: 1000
:sources: 
- https://rubygems.org