Improvements to deploy script

[molant]

List of things we could do to improve the experience with deploy.sh

• Parameters validation. E.g.: I arrived to step 6 when it told me registry_name wasn't valid
• Length of password for DB is not validated. It says between 12 and 32 but you can type anything
• Look into using the default version of Kubernetes instead of a hardcoded one that could be removed at any time
• Use the same region for all resources via the parameter, right now it's hardcoded in a few places
• If role assignment fails after 3 tries, the process continues, we should do better error validation
• The output isn't very nice TBH...
• Even though the script does some checking to see if the user is logged in, it doesn't work and you have to manually do az login before running the script
• If something fails, ask if we want to do clean up of the resources (delete resource group and service principal)
• From time to time there are errors with k8s with network operations. The solution for now seems to disable httpApplicationRouting in the template
• Tell how much each task has taken (and total)
• Maybe we should think about migrating this to powershell now that's crossplatform or node with listr or something like that to have a nicer output?

@utsavized, @sarvaje FYI