squid-deb-proxy's logrotate file calls "squid" instead of "squid3" on Precise [SRU]

[Problem]
<1-2 sentence summary of the issue>

[Impact]
<fill me in with explanation of severity and frequency of bug on users and justification for backporting the fix to the stable release>

[Development Fix]
<fill me in with an explanation of how the bug has been addressed in the development branch, including the relevant version numbers of packages modified in order to implement the fix. >

[Stable Fix]
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[Text Case]
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Broken Behavior:
Fixed Behavior:

[Regression Potential]
<fill me in with a discussion of likelihood and potential severity of regressions and how users could get inadvertently affected.>

[Original Report]

The logrotate configuration is trying to call "squid" instead of "squid3" to notify the proxy of the log rotation. Here is the error mail from cron :

/etc/cron.daily/logrotate:
logrotate_script: 2: logrotate_script: /usr/sbin/squid: not found
error: error running shared postrotate script for '/var/log/squid-deb-proxy/*.log '
run-parts: /etc/cron.daily/logrotate exited with return code 1

Here is the faulty logrotate config extract from /etc/logrotate.d/squid-deb-proxy :

 postrotate
  test ! -e /var/run/squid-deb-proxy.pid || /usr/sbin/squid -f /etc/squid-deb-proxy/squid-deb-proxy.conf -k rotate
 endscript

# lsb_release -rd
Description: Ubuntu precise (development branch)
Release: 12.04

# apt-cache policy squid-deb-proxy
squid-deb-proxy:
  Installed: 0.6.2
  Candidate: 0.6.2
  Version table:
 *** 0.6.2 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

# apt-cache policy squid3
squid3:
  Installed: 3.1.19-1ubuntu2
  Candidate: 3.1.19-1ubuntu2
  Version table:
 *** 3.1.19-1ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status