fix: [host] ensure to use the full ``kill`` binary

In some circumstances a call to ``kill`` will trigger the
builtin of your shell and could not support given options.

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

precise/host/hooks/install.d/80-dns-waterfall.sh

@@ -74,7 +74,7 @@ cat <<EOF >  /etc/logrotate.d/dnsmasq
        compress
 
        postrotate
-           kill -s SIGUSR2 "\$(cat /var/run/dnsmasq/dnsmasq.pid)"
+           /bin/kill -s SIGUSR2 "\$(cat /var/run/dnsmasq/dnsmasq.pid)"
        endscript
 }
 
@@ -90,7 +90,7 @@ cat <<EOF >  /etc/logrotate.d/lxc-dnsmasq
        compress
 
        postrotate
-           kill -s SIGUSR2 "\$(cat /var/run/lxc/dnsmasq.pid)"
+           /bin/kill -s SIGUSR2 "\$(cat /var/run/lxc/dnsmasq.pid)"
        endscript
 }