[BUG] root password setup does not properly escape all characters

[kremerpatrick]

Describe the bug
The 7.0 beta build does not properly escape the $ character, and possibly other special characters

To Reproduce
Steps to reproduce the behavior:

1. Use an appliance root password with a $ character in it
2. Deploy the appliance
3. Deployment will appear complete, but the appliance name is 'veba' and none of the customizations have happened
4. Logs show '/root/setup/setup.sh: line 108: unbound variable, and a blank ESCAPED_ROOT_PASSWORD

Expected behavior
A password containing a $ should be properly escaped

Screenshots
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Version (please complete the following information):

• VEBA Form Factor: [Appliance]
• VEBA Version: [7.0 beta]

Additional context
Add any other context about the problem here.