bump version for Guinin: 2.7.x

Initial version is 2.7.0-SNAPSHOT.
'7' connotes the 7th ONAP release, Guinin.

Issue-ID: AAF-1142
Signed-off-by: John J. Franey <john.franey@att.com>
Change-Id: I451a167f3f96ef54054c52f4389cceb8c467fc85
diff --git a/pom.xml b/pom.xml
index fd71179..bd4f3a2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.onap.aaf.authz</groupId>
     <artifactId>parent</artifactId>
-    <version>2.1.21-SNAPSHOT</version>
+    <version>2.7.0-SNAPSHOT</version>
     <name>aaf-authz</name>
     <packaging>pom</packaging>