* Removing 'ImageVersion' as an env var as we already use 'IMAGE_VERSION'. The env var is only used SoftwareReport.Generator script.
* Adding IMAGE_VERISON to SoftwareReport.Generator
* Adding IMAGE_VERISON to SoftwareReport.Generator
* Chnaging the way the env vars are used to floow the same pattern throughout
Co-authored-by: Jose Mosquera <jose.mosquera@dotdigital.com>