Fix sles-42.3 image cannot be found error (#205)
Fix sles-42.3 image cannot be found error (#205)

0. Fix image cannot be found error 
1. git config lines are not needed
2. procps is not needed
3. add ruby
4. pull in the gpg key import command (with the comment)
5. pull in the new rvm command line (with the comment)
6. move zypper -n clean to the very end, and
7. add a comment in front of the two sed lines below, maybe along the lines of # Pretend we're on SLES 12...

GoogleCloudPlatform/google-fluentd,GoogleCloudPlatform/google-fluentd,GoogleCloudPlatform/google-fluentd