Security update for radvd: GLSA 201111-08 (#9985).
Fix bug that left a chance for unprivileged users to gain root access during VM bootstrap (#9953).
Stop VM servers to start swapping under certain circumstances, thereby improving VM performance and reliability (#9763).
Stop passenger/rack from being installed in apache2 instances where it is not needed (#7547).
Allow service users to write to
/etc/haproxy.cfgand restart haproxy (RT 79985).