[FINE] Handle Managed Disk Snapshots

[jerryk55]

ManageIQ/manageiq-smartstate#23

and

ManageIQ/manageiq-smartstate#25

were added as part of the work required for blocker bug

https://bugzilla.redhat.com/show_bug.cgi?id=1475540.

This commit and subsequent PR track the backport of the changes into the Fine release.

[miq-bot]

Checked commits jerryk55/manageiq-gems-pending@8e62ad9~...b06a40e with ruby 2.2.6, rubocop 0.47.1, and haml-lint 0.20.0
5 files checked, 8 offenses detected

lib/gems/pending/MiqVm/miq_azure_vm.rb

• ❗ - Line 66, Col 9 - Style/ConditionalAssignment - Use the return of the conditional for variable assignment and comparison.

lib/gems/pending/disk/modules/AzureBlobDisk.rb

• ❗ - Line 1, Col 1 - Style/FileName - The name of this source file (AzureBlobDisk.rb) should use snake_case.
• ❗ - Line 21, Col 5 - Style/VariableName - Use snake_case for variable names.

lib/gems/pending/disk/modules/AzureDiskCommon.rb

• ❗ - Line 10, Col 5 - Style/VariableName - Use snake_case for variable names.
• ❗ - Line 1, Col 1 - Style/FileName - The name of this source file (AzureDiskCommon.rb) should use snake_case.

lib/gems/pending/disk/modules/AzureManagedDisk.rb

• ❗ - Line 17, Col 5 - Style/VariableName - Use snake_case for variable names.
• ❗ - Line 18, Col 5 - Style/VariableName - Use snake_case for variable names.
• ❗ - Line 1, Col 1 - Style/FileName - The name of this source file (AzureManagedDisk.rb) should use snake_case.

[jerryk55]

@simaishi this test will not pass until ManageIQ/manageiq-providers-azure#120 is merged.