Compare the contents of AzureResourceProbe objects with eql? method

[omerdemirok]

Signed-off-by: Omer Demirok odemirok@chef.io

Description

• Compare AzureResourceProbe objects' contents with the eql? method.
  This will allow:

describe azure_virtual_machine(resource_id: '/foo/bar') do
   its('tags') { should eql({'name': 'my_VM'})
end

Issues Resolved

Fixes #326

Check List

• New functionality includes tests
• All tests pass
• rake lint passes
• All commits have been signed-off for the Developer Certificate of Origin. See https://github.com/chef/chef/blob/master/CONTRIBUTING.md#developer-certification-of-origin-dco

[rmoles]

Nice @omerdemirok ! This is a really valuable change and helpful for end users.