BTS management:

Add a noupdate option to the opkg script to try
updating the packages without actually running an
update (maybe we already have the latest lists)

Tweak the maint and timing for it to temporarily push
fixed manager binary.

In opkg-1, install on BTS0 in order
to download the packages before copying them to the
local system.

modules/rhizo_base/templates/rhizomatica.cron.erb

@@ -81,7 +81,7 @@ PYTHONPATH=$PYTHONPATH:/var/rhizomatica/rccn
   30  5  *   *   *      root /home/rhizomatica/bin/check_broken.sh
 
 # Jobs to run on the BTS
-  15  3  *   *   *      root /var/SysmoBTS/maint.sh
+  */15  *  *   *   *      root /var/SysmoBTS/maint.sh
 
 # Check if FS or NTIB needs restart
   30  2-5  *   *   *      root /home/rhizomatica/bin/check_dirty.sh