Bugfix: tls time sources

src/freedombone

   apt-get -y remove ntpdate
 
   echo '#!/bin/bash' > /usr/bin/updatedate
-  echo "TIMESOURCE='TLS_TIME_SOURCE1'" >> /usr/bin/updatedate
-  echo "TIMESOURCE2='TLS_TIME_SOURCE2'" >> /usr/bin/updatedate
+  echo "TIMESOURCE='${TLS_TIME_SOURCE1}'" >> /usr/bin/updatedate
+  echo "TIMESOURCE2='${TLS_TIME_SOURCE2}'" >> /usr/bin/updatedate
   echo 'LOGFILE=/var/log/tlsdate.log' >> /usr/bin/updatedate
   echo 'TIMEOUT=5' >> /usr/bin/updatedate
   echo "EMAIL=$MY_EMAIL_ADDRESS" >> /usr/bin/updatedate