Add support for NetApp resources

[arnaudlh]

Add support for:

• [ ] azurerm_netapp_account
• [ ] azurerm_netapp_pool
• [ ] azurerm_netapp_snapshot
• [ ] azurerm_netapp_volume

Could not find reference here: https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/resource-name-rules.

Based on portal discovery:

azurerm_netapp_account:

• The name must be between 1 and 128 characters.
• The name cannot contain non-ASCII or special characters.
• Proposed slug: ana
• Proposed validation regex: "validationregex": "\"^[a-zA-Z0-9][a-zA-Z0-9-]{0,127}[a-zA-Z0-9]$\"",
• "regex": "\"[^0-9A-Za-z_-]\""

azurerm_netapp_pool:

• The name cannot contain non-ASCII or special characters.
• The name must begin with a letter or a number and can contain letters, numbers, underscore ('_') and hyphens ('-') only.
• The name must be between 1 and 64 characters.
• Proposed slug: anp
• Proposed validation regex: "validationregex": "\"^[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]$\"",
• "regex": "\"[^0-9A-Za-z_-]\""

azurerm_netapp_volume:

• The name must begin with a letter and can contain letters, numbers, underscore ('_') and hyphens ('-') only.
• The name must be between 1 and 64 characters.
• Proposed slug: anv
• Proposed validation regex: "validationregex": "\"^[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]$\"",
• "regex": "\"[^0-9A-Za-z_-]\""

azurerm_netapp_snapshot:

• The name must begin with a letter or a number and can contain letters, numbers, underscore ('_') and hyphens ('-') only.
• The name must be between 1 and 255 characters.
• Proposed slug: anv
• Proposed validation regex: "validationregex": "\"^[a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]$\"",
• "regex": "\"[^0-9A-Za-z_-]\""

[Nepomuceno]

Which ones can contain dashes (-)?