Bumping version to 2.7-SNAPSHOT

Change-Id: I514b43a6e01db6991543680ea2c7c8dd6ef6635a
diff --git a/compiler/base/linker/pom.xml b/compiler/base/linker/pom.xml
index ae5dff9..6374328 100644
--- a/compiler/base/linker/pom.xml
+++ b/compiler/base/linker/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.onosproject</groupId>
         <artifactId>onos-yang-compiler-base</artifactId>
-        <version>2.6.1</version>
+        <version>2.7-SNAPSHOT</version>
     </parent>
 
     <artifactId>onos-yang-compiler-linker</artifactId>