add git HEAD to the environment details
add git HEAD to the environment details

this is helpful when figuring out if a failure might be related to
an old version of the automation scripts

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