Update Azure provision template to restrict VM names

[djberg96]

This adds a VM name constraint to the Azure provisioning dialog, restricting it to alphanumeric characters, hyphens and underscores, with a range of 1-15 characters. Some additional restrictions have also been included regarding leading and trailing characters.

Addresses https://bugzilla.redhat.com/show_bug.cgi?id=1377889

[jteehan]

I was just looking at this. There are a few other less obvious restrictions like the username can't be "root" or "Administrator" The most common error is an invalid password but MS keeps changing those rules frequently, but maybe the length restriction could be added.

Password restrictions
8 characters minimum and 16 characters maximum
Strong passwords only: Requires 3 out of 4 of the following:
Lowercase characters
Uppercase characters
Numbers (0-9)
Symbols (see password restrictions above)

[djberg96]

@jteehan This is just for VM names, not admin names and passwords. That will be a separate PR.

[djberg96]

@miq-bot add_label wip

[djberg96]

Need to look at this some more, it seems to treat valid names as invalid for some reason.

[djberg96]

Turns out it was just a matter of fixing "regexp".

[djberg96]

@miq-bot remove_label wip

[djberg96]

@miq-bot add_label euwe/yes

[djberg96]

@gmcculloug Look alright?

[simaishi]

Euwe backport details:

$ git log -1
commit 0f4142ff5b86bdc72f4cc60cf3090868b3228718
Author: Greg McCullough <[email protected]>
Date:   Tue Dec 6 10:10:10 2016 -0500

    Merge pull request #12947 from djberg96/provision_template
    
    Update Azure provision template to restrict VM names
    (cherry picked from commit 5f9094f3e2b9dd8fe5174e70bba36b51dade5982)
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1402528