Add verify_credentials and params_for_create

Add a method to return the parameters required to add an SCVMM provider
and a method to verity credentials with those parameters.

app/models/manageiq/providers/microsoft/infra_manager.rb

@@ -20,6 +20,51 @@ def self.description
     @description ||= "Microsoft System Center VMM".freeze
   end
 
+  def self.params_for_create
+    @params_for_create ||= {
+      :title  => "Configure #{description}",
+      :fields => [
+        {
+          :component  => "text-field",
+          :name       => "endpoints.default.server",
+          :label      => "Server Hostname/IP Address",
+          :isRequired => true,
+          :validate   => [{:type => "required-validator"}]
+        },
+        {
+          :component  => "text-field",
+          :name       => "endpoints.default.username",
+          :label      => "Username",
+          :isRequired => true,
+          :validate   => [{:type => "required-validator"}]
+        },
+        {
+          :component  => "text-field",
+          :name       => "endpoints.default.password",
+          :label      => "Password",
+          :type       => "password",
+          :isRequired => true,
+          :validate   => [{:type => "required-validator"}]
+        },
+        {
+          :component => "text-field",
+          :name      => "endpoints.default.port",
+          :label     => "Port",
+          :type      => "numberic",
+        }
+      ]
+    }.freeze
+  end
+
+  def self.verify_credentials(args)
+    default_endpoint = args.dig("endpoints", "default")
+    username, password, server, port = default_endpoint&.values_at("username", "password", "server", "port")
+    connect_params = build_connect_params(:user => username, :password => password, :hostname => server, :port => port)
+
+    raw_connect(connect_params, validate = true)
+    true
+  end
+
   def self.raw_connect(connect_params, validate = false)
     require 'winrm'