Added Permission for TenantConfiguration changes

- created SpringEvalExpression for the right to change tenant configuration
- added this authorization filter to every tenant configuration related method

Signed-off-by: Nonnenmacher Fabian <fabian.nonnenmacher@bosch-si.com>

hawkbit-security-core/src/main/java/org/eclipse/hawkbit/im/authentication/SpPermission.java

@@ -308,6 +308,13 @@ public final class SpPermission {
         public static final String HAS_AUTH_ROLLOUT_MANAGEMENT_WRITE = HAS_AUTH_PREFIX + ROLLOUT_MANAGEMENT
                 + HAS_AUTH_SUFFIX + HAS_AUTH_AND + HAS_AUTH_PREFIX + UPDATE_TARGET + HAS_AUTH_SUFFIX;
 
+        /**
+         * Spring security eval hasAuthority expression to check if spring
+         * context contains {@link SpPermission#TENANT_CONFIGURATION}
+         */
+        public static final String HAS_AUTH_TENANT_CONFIGURATION = HAS_AUTH_PREFIX + TENANT_CONFIGURATION
+                + HAS_AUTH_SUFFIX;
+
         private SpringEvalExpressions() {
             // utility class
         }