def find_google_ssh_public_key
      keyfile = ENV.fetch('BEAKER_gce_ssh_public_key', File.join(ENV['HOME'], '.ssh', 'google_compute_engine.pub'))

      if @options[:gce_ssh_public_key] && !File.exist?(keyfile)
        keyfile = @options[:gce_ssh_public_key]
      end

      raise("Could not find GCE Public SSH Key at '#{keyfile}'") unless File.exist?(keyfile)

      return keyfile
    end
def find_google_ssh_public_key
      keyfile = ENV.fetch('BEAKER_gce_ssh_public_key', File.join(ENV['HOME'], '.ssh', 'google_compute_engine.pub'))

      if @options[:gce_ssh_public_key] && !File.exist?(keyfile)
        keyfile = @options[:gce_ssh_public_key]
      end

      raise("Could not find GCE Public SSH Key at '#{keyfile}'") unless File.exist?(keyfile)

      return keyfile
    end
Do some reasonable sleuthing on the SSH public key for GCE