bump id to M7
diff --git a/releng.control/cc_config.xml b/releng.control/cc_config.xml
index d134db5..edf0e56 100644
--- a/releng.control/cc_config.xml
+++ b/releng.control/cc_config.xml
@@ -603,7 +603,7 @@
                     value="S"/>
                 <property
                     name="buildId"
-                    value="3.1M5"/>
+                    value="3.1M7"/>
                 <property
                     name="buildBranch"
                     value="R3.1"/>