[feature: quality of life improvement] Make WaitForNetworking parameter configurable by user in `veertu-anka-vm-clone` builder

[aliculPix4D]

The default boot_delay value of 7 seconds is often not enough for the VM network to become ready. Hence, it often occurs that the VM building fails almost immediately at the start of the shell provisioner (e.g. because one tries to do a curl requrest like: curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh). Of course, one of the easy options to workaround this is increasing the boot_delay value. The increased value might or might not be enough, with the risk of waiting for too long in case one selects larger value.

I was wondering if it would be better to expose: WaitForNetworking parameter to the user instead. That way, the user is sure that network is really ready and that we waited only the necessary time, not more.

Example this value:

packer-plugin-veertu-anka/client/client_core.go

Line 241 in 7d7858c

WaitForNetworking bool

Looking forward to hearing your feedback on this topic.

Thank you for the assistance.