init_nodes: install ntpdate, we need it later

Signed-off-by: Holger Levsen <holger@layer-acht.org>

init_node

@@ -33,7 +33,7 @@ which sudo || apt-get install -y sudo
 echo '%jenkins-adm ALL= NOPASSWD: ALL' > /etc/sudoers.d/jenkins-adm # will be overwritten later
 chown jenkins-adm:jenkins-adm /home/jenkins-adm
 cd ~jenkins-adm
-[ -x /usr/bin/git ] || apt-get install -y git
+[ -x /usr/bin/git ] || apt-get install -y git ntpdate
 su jenkins-adm -l -c "git clone $GIT_REPO"
 cd jenkins.debian.net
 su jenkins-adm -l -c "git -C ~jenkins-adm/jenkins.debian.net config pull.ff only"