Add integration test for virtual machine size

Author: KevinLoiseau

test/integration/virtual_machine_size.rb

@@ -0,0 +1,27 @@
+require 'fog/azurerm'
+require 'yaml'
+
+azure_credentials = YAML.load_file(File.expand_path('credentials/azure.yml', __dir__))
+
+compute = Fog::Compute::AzureRM.new(
+  tenant_id: azure_credentials['tenant_id'],
+  client_id: azure_credentials['client_id'],
+  client_secret: azure_credentials['client_secret'],
+  subscription_id: azure_credentials['subscription_id']
+)
+
+  ########################################################################################################################
+  ######################                      List virtual machine sizes                            ######################
+  ########################################################################################################################
+
+begin
+  puts 'List of virtual machine sizes:'
+  virtual_machine_sizes = compute.virtual_machine_sizes(location: LOCATION)
+  virtual_machine_sizes.each do |virtual_machine_size|
+    puts "- #{virtual_machine_size.name}"
+  end
+
+  puts 'Integration Test for virtual machine size ran successfully!'
+rescue
+  puts 'Integration Test for virtual machine size is failing!'
+end