patch: fix install hook failure for VM deployment in aws

[patriciareinoso]

🏷️ Type of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Tooling and CI
• Dependencies upgrade or change
• Chores / refactoring

📝 Description

This PR fixes #399

The volume mount on tmp is interferring with the charmed-mongodb snap installation

The solution found was to restart snapd before installing the charmed-mongodb snap so that snapd reloads its environment and is aware of the tmp directory

🧪 Manual testing steps

Manually tested deployment in aws
Just deploy a rs is enough

Deployed in a local lxd

🔬 Automated testing steps

Added UTS

✅ Checklist

• My code follows the code style of this project.
• I have added or updated any relevant documentation.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.