Fix the jenkins file to only generate tree from one file.

.jenkins.sh

@@ -21,7 +21,7 @@ verdict=$?
 echo "Building HTML tree"
 docker run -v"$(pwd)/src/yang/:/yang/" mjethanandani/pyang \
 	"/bin/sh" -c "cd /yang/ && pyang -f jstree -p /yang/ \
-	/yang/*.yang > etsi-nfv.html"
+	/yang/etsi-nfv-descriptors.yang > etsi-nfv.html"
 
 sed -r -i 's|<a href=\"http://www.tail-f.com">|<a href="http://etsi.org">|g' src/yang/etsi-nfv.html
 sed -r -i 's|data\:image/gif\;base64,R0lGODlhS.*RCAA7|https://www.etsi.org/images/ETSILogoTwitter.png\" height=\"100|g' src/yang/etsi-nfv.html