Use 1.5.1 snapshot cbi plugin

It's a prep step decoupling cbi plugin from using tycho internals as
tycho 5.0 changed them in prep for Maven 4.

Author: akurtakov

eclipse-platform-parent/pom.xml

@@ -69,7 +69,7 @@
 
     <tycho.version>4.0.9</tycho.version>
 
-    <cbi-plugins.version>1.5.0</cbi-plugins.version>
+    <cbi-plugins.version>1.5.1-SNAPSHOT</cbi-plugins.version>
     <surefire.version>3.5.0</surefire.version>
 
     <!--