Make update_automation truly atomic updating
Make update_automation truly atomic updating

Using wget -O is dangerous on parallel runs, as it might
cause two jobs running at the same time to update the update_automation
script, which causes this error:

 /root/bin/update_automation: /bin/bash: bad interpreter: Text file busy
 Build step 'Execute shell' marked build as failure

This is a security measurement by the kernel to avoid races with
somebody replacing the content of a shell script while it is being
executed.

aspiers/automation,gosipyan/automation,gosipyan/automation,SUSE-Cloud/automation,gosipyan/automation,gosipyan/automation,SUSE-Cloud/automation,aspiers/automation,aspiers/automation,SUSE-Cloud/automation,aspiers/automation,SUSE-Cloud/automation