Work on ITest-2 Failures:

- I think the recent work for 1071330 which added caching and last-update
  logic around SystemSettings adversely affected the LDAP tests which
  where doing direct update of read-only system settings.  Adding a
  new inetrnal-only local SLSB for safely updating a read-only SystemSetting
  and refactoring test class to use it.
- Removed now-obsolete NamedQuery that supported the old test-class logic.
(cherry picked from commit e81c703)

Conflicts:

	modules/enterprise/server/jar/src/main/java/org/rhq/enterprise/server/system/SystemManagerLocal.java

Signed-off-by: Simeon Pinder <spinder@fulliautomatix.conchfritter.com>

modules/core/domain/src/main/java/org/rhq/core/domain/common/SystemConfiguration.java

@@ -38,9 +38,7 @@
  * @author <a href="mailto:ghinkle@jboss.com">Greg Hinkle</a>
  */
 @Entity
-@NamedQueries( {
-    @NamedQuery(name = SystemConfiguration.QUERY_FIND_ALL, query = "SELECT c FROM SystemConfiguration AS c"),
-    @NamedQuery(name = SystemConfiguration.FIND_PROPERTY_BY_KEY, query = "SELECT c FROM SystemConfiguration AS c WHERE c.propertyKey = :key") })
+@NamedQueries({ @NamedQuery(name = SystemConfiguration.QUERY_FIND_ALL, query = "SELECT c FROM SystemConfiguration AS c") })
 @SequenceGenerator(allocationSize = org.rhq.core.domain.util.Constants.ALLOCATION_SIZE, name = "RHQ_SYSTEM_CONFIG_ID_SEQ", sequenceName = "RHQ_SYSTEM_CONFIG_ID_SEQ")
 @Table(name = "RHQ_SYSTEM_CONFIG")
 public class SystemConfiguration implements Serializable {