r/v-l: Use the host network

I don't know what the deal is, but restarting the _victoria-logs_
container makes it lose inbound network connectivity.  It appears that
the firewall rules that forward the ports to the container's namespace
seem to get lost, but I can't figure out why.  To fix it, I have to
flush the netfilter rules (`nft flush ruleset`) and then restart
_firewalld_ and _victoria-logs_ to recreate them.  This is rather
cumbersome, and since Victoria Logs runs on a dedicated VM, there's
really not much advantage to isolating the container's network.

roles/victoria-logs/templates/victoria-logs.container.j2

@@ -16,10 +16,7 @@ NoNewPrivileges=yes
 ReadOnly=yes
 ReadOnlyTmpfs=yes
 AddCapability=CAP_NET_BIND_SERVICE
-PublishPort=9428:9428
-{% for portspec in victoria_logs_publish_ports %}
-PublishPort={{ portspec }}
-{% endfor %}
+Network=host
 HealthCmd=/usr/bin/wget -q -O /dev/null 127.0.0.1:9428/health
 HealthInterval=1m
 HealthOnFailure=stop