adding overlaps to surpress sqlalchemy warnings (#72)

ziggurat_foundations/models/group.py

@@ -56,7 +56,7 @@ def users_dynamic(self):
         """ dynamic relationship for users belonging to this group
             one can use filter """
         return sa.orm.relationship(
-            "User", secondary="users_groups", order_by="User.user_name", lazy="dynamic"
+            "User", secondary="users_groups", order_by="User.user_name", lazy="dynamic", overlaps="groups,users"
         )
 
     @declared_attr
@@ -107,6 +107,7 @@ def resources_dynamic(self):
             passive_deletes=True,
             passive_updates=True,
             lazy="dynamic",
+            overlaps="owner_group,resources"
         )
 
     @sa.orm.validates("permissions")

ziggurat_foundations/models/resource.py

@@ -92,6 +92,7 @@ def groups(self):
             secondary="groups_resources_permissions",
             passive_deletes=True,
             passive_updates=True,
+            overlaps="groups,resource_permissions,group_permissions",
         )
 
     @declared_attr
@@ -102,6 +103,7 @@ def users(self):
             secondary="users_resources_permissions",
             passive_deletes=True,
             passive_updates=True,
+            overlaps="user_permissions"
         )
 
     __mapper_args__ = {"polymorphic_on": resource_type}

ziggurat_foundations/models/user.py

@@ -95,6 +95,7 @@ def groups_dynamic(self):
             lazy="dynamic",
             passive_deletes=True,
             passive_updates=True,
+            overlaps="groups,users,users_dynamic"
         )
 
     @declared_attr
@@ -120,6 +121,7 @@ def resource_permissions(self):
             cascade="all, delete-orphan",
             passive_deletes=True,
             passive_updates=True,
+            overlaps="users"
         )
 
     @declared_attr