Add strk to sudoers on backup VM

[strk]

Needed to ensure backups are in place before starting the Trac upgrade (#1816)

[strk]

I'm actually not sure what the policy is on that machine, because I see the sudo group is empty. My public RSA key, in case that's the way to get in:

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDXfHGzxlzPA9gjIpbHPjCQ2SHvWve+QgficecsCwjACiZvOLrh71XalGGGpbxANkzs7amZjbqpvVd6L3tQJAZK8pT5ljVSV1bx3pX4HxxcL9CpAMB+SfmdRjlTxJ5uvmDNZkHKZl17PglVRYaS+fBbGAJe4JCNhMBzN0szmI3YWHjKlaJtnlAK6NVPiTyrcxQoNkb+XsDq53TBUapfK78JrJssI/iyuqZZ0nkrCgQL92UACRl9a7Wlq0fswsASi8/X/5iKKQu3Qfxo7yKIi7EbxvXn6/rUnyoykM7SwKEXiK06ABZxw8/lN9qcZhhO8YEo+zairIyX4S5DfF+5kGn9 strk@cdb

[martin]

Backup of Trac is three stages (defined in /etc/bacula/bacula-dir.conf on backup):

1.) Create a full database dump on tracsvn using:

/usr/local/sbin/PGDump.sh

2.) Create a Trac-level dump /osgeo/trac_backup.zip on tracsvn using:

/osgeo/backup.sh

3.) Backup /osgeo/trac/ and /osgeo/trac_backup.zip to Bacula

I'vre now added "strk" to sudo on backup

[strk]

Thanks ! Will ask next questions on the list.