Implement New and Remove SsoGroup cmdlets.

Signed-off-by: Dimitar Milov <dmilov@vmware.com>

Modules/VMware.vSphere.SsoAdmin/src/VMware.vSphere.SsoAdmin.Client/VMware.vSphere.SsoAdminClient.Tests/IntegrationTests.cs

@@ -103,7 +103,7 @@ namespace VMware.vSphere.SsoAdminClient.Tests
          var ssoAdminClient = new SsoAdminClient(_vc, _user, _password, new AcceptAllX509CertificateValidator());
 
          // Act
-         var actual = ssoAdminClient.GetPersonUsersInGroup("", new Group { 
+         var actual = ssoAdminClient.GetPersonUsersInGroup("", new Group(ssoAdminClient) {
             Name = "Administrators",
             Domain = "vsphere.local"
          }).ToArray();

Modules/VMware.vSphere.SsoAdmin/src/VMware.vSphere.SsoAdmin.Client/VMware.vSphere.SsoAdminClient/DataTypes/Group.cs

@@ -9,13 +9,26 @@ using System.Threading.Tasks;
 
 namespace VMware.vSphere.SsoAdminClient.DataTypes
 {
-   public class Group
-   {
-      public string Name { get; set; }
-      public string Domain { get; set; }
+    public class Group
+    {
+        SsoAdminClient _client;
+        public Group(SsoAdminClient client)
+        {
+            _client = client;
+        }
 
-      public override string ToString() {
-         return $"{Name}@{Domain}";
-      }
-   }
+        public string Name { get; set; }
+        public string Domain { get; set; }
+        public string Description { get; set; }
+
+        public SsoAdminClient GetClient()
+        {
+            return _client;
+        }
+
+        public override string ToString()
+        {
+            return $"{Name}@{Domain}";
+        }
+    }
 }