debian-add_ip.sh: call initscript via invoke-rc.d

Fix this lintian warning:

W: vzctl: script-calls-init-script-directly
./etc/vz/dists/scripts/debian-add_ip.sh:182
N:
N:    This script apparently runs an init script directly rather than using
N:    invoke-rc.d. While use of invoke-rc.d is only required for maintainer
N:    scripts, supporting the policy layer that it implements is a good idea
N:    in any script.
N:
N:    Refer to Debian Policy Manual section 9.3.3.2 (Running initscripts) for
N:    details.
N:
N:    Severity: normal, Certainty: possible
N:

http://bugzilla.openvz.org/1640
1 file changed