Add azcopy to toolbox image

This MR adds the azcopy command to begin adding support of using Azure blob storage as a location to send backups.

azcopy was chosen over the azure-cli Python package because:

1. It is all that is needed to move the backups to Azure blob storage
2. It is much smaller than all the necessary Python packages needed to install azure-cli
   • I was not able to find a way of just installing just the storage packages

Required

• Merge Request Title and Description are up to date, accurate, and descriptive
• MR targeting the appropriate branch
• MR has a green pipeline on GitLab.com
• Pipeline is green on dev.gitlab.org if the change is touching anything besides documentation or internal cookbooks
• trigger-package has a green pipeline running against latest commit

Expected (please provide an explanation if not completing)

• Test plan indicating conditions for success has been posted and passes
• Documentation created/updated
• Tests added
• Integration tests added to GitLab QA
• Equivalent MR/issue for omnibus-gitlab opened