message: Add missing rake functionality
diff: -begin
  - # require '../north_test_environment/rakefile.rb'
  -rescue LoadError
  - # not using custom rakescript
  -end
  -
  LEVEL_WARN = 1
  LEVEL_INFO = 2
  LEVEL_DEBUG = 3
  LEVEL_TRACE = 4
  VERBOSITY = LEVEL_DEBUG
  +def shell(cmd, verbose = false)
  + if verbose
  + Rake.sh cmd
  + else
  + _stdout_str, error_str, status = Open3.capture3(cmd)
  + unless status.success?
  + warn error_str
  + raise 'did not work'
  + end
  + end
  +end
  +
  def debug(content)
  require 'colored'
  puts("DEBUG: #{content}") unless VERBOSITY < LEVEL_DEBUG
  