Fix tools/version.sh

The script missed to update all but the first version in
org.eclipse.jgit.coverage/pom.xml

Change-Id: If8021accf07d7b57b477992cc0f1ba8ddc7db9a6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

tools/version.sh

@@ -156,6 +156,17 @@ perl -pi~ -e '
 	}
 	' org.eclipse.jgit.packaging/pom.xml
 
+perl -pi~ -e '
+	if ($ARGV ne $old_argv) {
+		$seen_version = 0;
+		$old_argv = $ARGV;
+	}
+	if ($seen_version < 18) {
+			$seen_version++ if
+		s{<(version)>.*</\1>}{<${1}>'"$POM_V"'</${1}>};
+	}
+	' org.eclipse.jgit.coverage/pom.xml
+
 perl -pi~ -e '
 	if ($ARGV ne $old_argv) {
 		$seen_version = 0;