[v2] Bootstrap script fails if path doesn't start with ./

[ted-ross]

Describe the bug
When using the bootstrap.sh script to launch a non-kubernetes site, the -p option (path) must begin with ./ or the operation will fail with a non-helpful error message,

How To Reproduce
Run the Redis example, or any example that uses Podman sites. In the bootstrap call, specify the path as -p declarative (as opposed to -p ./declarative) and watch it fail.

Expected behavior
Proper setup of the site defined in the declarative directory.

Environment details

• Skupper CLI: head of the v2 branch
• Skupper Operator (if applicable): N/A
• Platform: Podman on Fedora

Additional context
None