Azure - VM - action to resize vm

[danmarcab]

This PR adds the azure.vm.actions.resize action.

It is my first contribution and python is not my first language so suggestions are very welcome.

Trying to run the test suite I found a couple of other minor things:

• Deprecation warning in provision.sh script
• The vm.json template was not using the variable and was hardcoded to a non supported size
• The example for the azure.vm.actions.delete had a misleading name

Not sure if they are ok to be merged like this or you prefer separate PRs, they are in different commits so easily done if needed.

[kapilt]

Thanks for the pull request! This looks great, as a first step, If you don't mind, could you sign the CLA per the developer docs? Direct link here: https://docs.google.com/forms/d/e/1FAIpQLSfwtl1s6KmpLhCY6CjiY8nFZshDwf_wrmNYx1ahpsNFXXmHKw/viewform

We're in process on switching out to the cncf.io easycla system, but thats likely going to be another month in transition.

[danmarcab]

Sure @kapilt, I've just filled the form 👍

[h-dub]

TY

[kapilt]

lgtm, thanks

[h-dub]

note: old az installs will need an update to work with the provision.sh changes. 2.14.0 works