Changing version from 1.15.0-SNAPSHOT to 2.0.0-SNAPSHOT.

Change-Id: I61a586cfc769275db78f4059a630ab0e0f87c6e7
diff --git a/tools/build/onos-prepare-sonar b/tools/build/onos-prepare-sonar
index 75946ab..1798fda 100755
--- a/tools/build/onos-prepare-sonar
+++ b/tools/build/onos-prepare-sonar
@@ -12,7 +12,7 @@
 from subprocess import call, check_call, check_output
 
 # FIXME pull the version from the Buck version file
-ONOS_VERSION='1.15.0-SNAPSHOT'
+ONOS_VERSION='2.0.0-SNAPSHOT'
 
 # SonarQube property file name and template
 FILE_NAME = 'sonar-project.properties'