Add exclusiveGroupPermissions to sandbox's acl
Add exclusiveGroupPermissions to sandbox's acl

Currently the gitweb access information lists sandbox's acl
as giving +2 +A to all registered users. Looking at a patch to
sandbox reveals that +2 +A is not in fact a permission all
registered users can access.

With the belief that since the all projects acl setting gives
+1 to all registered users and therefore that the project
specific sandbox acl is not overridding the all projects acl,
the patch adds exclusiveGroupPermissions to the sandbox acl
to override the all projects acl and grant +2 +A to all
registered users for the sandbox repo.

Change-Id: I4f69d9ec3fdcdc524760f153fa61b0d9108cd8c6

Tesora/tesora-project-config,dongwenjuan/project-config,noorul/os-project-config,openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config,noorul/os-project-config,dongwenjuan/project-config