Makes provider user key type for new membership provider configurable, by default it is int

src/Umbraco.Web/Security/Providers/MembersMembershipProvider.cs

@@ -42,6 +42,7 @@ namespace Umbraco.Web.Security.Providers
         private string _defaultMemberTypeAlias = "Member";
         private volatile bool _hasDefaultMember = false;
         private static readonly object Locker = new object();
+        private bool _providerKeyAsGuid = false;
 
         public override string ProviderName
         {
@@ -58,7 +59,7 @@ namespace Umbraco.Web.Security.Providers
 
         protected override MembershipUser ConvertToMembershipUser(IMember entity)
         {
-            return entity.AsConcreteMembershipUser(Name);
+            return entity.AsConcreteMembershipUser(Name, _providerKeyAsGuid);
         }
 
         public string LockPropertyTypeAlias { get; private set; }
@@ -85,6 +86,15 @@ namespace Umbraco.Web.Security.Providers
                 }
                 _hasDefaultMember = true;
             }
+
+            //devs can configure the provider user key to be a guid if they want, by default it is int
+            if (config["providerKeyType"] != null)
+            {
+                if (config["providerKeyType"] == "guid")
+                {
+                    _providerKeyAsGuid = true;
+                }
+            }
         }
 
         public override string DefaultMemberTypeAlias

src/Umbraco.Web/Security/Providers/UsersMembershipProvider.cs

@@ -47,7 +47,7 @@ namespace Umbraco.Web.Security.Providers
         protected override MembershipUser ConvertToMembershipUser(IUser entity)
         {
             //the provider user key is always the int id
-            return entity.AsConcreteMembershipUser(Name);
+            return entity.AsConcreteMembershipUser(Name, true);
         }
 
         public override void Initialize(string name, System.Collections.Specialized.NameValueCollection config)