Use OSGi version for updatesite-maven-plugin

It is consumed by sdk.p2 during SDK build and only used with OSGi
version.

Change-Id: I8ab200f8f896dcd2f9b9d8e24c15b3d753409c6c
Signed-off-by: Arthur van Dorp <Arthur.vanDorp@bsi-software.com>
Reviewed-on: https://git.eclipse.org/r/c/scout/org.eclipse.scout.sdk/+/166854
diff --git a/shell_scripts/release.sh b/shell_scripts/release.sh
index c4909b7..ce5f7e0 100755
--- a/shell_scripts/release.sh
+++ b/shell_scripts/release.sh
@@ -64,7 +64,7 @@
 fi
 _MAVEN_OPTS="$_MAVEN_OPTS -e -B"
 
-mvn -f updatesite-maven-plugin -P release.setversion -N -Dmaster_release_newVersion=$SCOUT_RT -Dorg.eclipse.scout.rt_version=$SCOUT_RT $_MAVEN_OPTS
+mvn -f updatesite-maven-plugin -P release.setversion -N -Dmaster_release_newVersion=$OSGI_VERSION -Dorg.eclipse.scout.rt_version=$SCOUT_RT $_MAVEN_OPTS
 processError
 mvn -f scout-helloworld-app -P release.setversion -N -Dmaster_release_newVersion=$SCOUT_RT -Dorg.eclipse.scout.rt_version=$SCOUT_RT $_MAVEN_OPTS
 processError