Revert "Disable service hasrestart"
Revert "Disable service hasrestart"

This reverts commit b82b09ac1f437b8c572658d5ab2cee3918bc37f9.

I don't think this is quite the right solution to the problem because we'll
never make use of HUP for Heka's own config changes (even if Heka doesn't
currently support it correctly - it may in the future).

alphagov/puppet-heka