updates gitignore to fix image build and prevent false dirty

[tonytheleg]

What this PR does

Before this PR:
The image build process creates an archive file to facilitate the build process and then removes it
This causes the image to be tagged as dirty as there are uncommited changes due to the new file

After this PR:

• adds the expected archive file to gitignore so that the commit is not seen as dirty when its clean
• this ensures deploying using make target selects the correct image as both steps rely on COMMIT variable defined in makefile

Jira:
Link to demo recording:

Special notes for your reviewer

Checklist

This checklist is not enforcing, but it's a reminder of items that could be relevant to every PR.
Approvers are expected to review this list.

• PR: The PR description is expressive enough and will help future contributors
• Code: Write code that humans can understand and Keep it simple
• Refactor: You have left the code cleaner than you found it (Boy Scout Rule)
• Upgrade: Impact of this change on upgrade flows was considered and addressed if required
• Deployment: The deployment process was considered and addressed if required
• Testing: New code requires new unit tests.
• Documentation: Is the documentation updated? Either in the doc located in focus area, in the README or in the code itself.
• Customers: Is this change affecting customers? Is the release plan considered?