Set version to 2.7 to match the Gerrit release

Change-Id: Idb497fda85663cac197b6721e83fd430760dbd73

pom.xml

diff --git a/pom.xml b/pom.xml
index 2725320..568246e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
   <groupId>com.googlesource.gerrit.plugins.reviewnotes</groupId>
   <artifactId>reviewnotes</artifactId>
   <packaging>jar</packaging>
-  <version>2.7-SNAPSHOT</version>
+  <version>2.7</version>
   <name>reviewnotes</name>
 
   <properties>