bugfix: set network interface static value to lower case letters

templates/answerfile.j2

@@ -65,7 +65,7 @@ export DISK_DEVICES
 {%       set ifresdata.ipv6_prefix = hostobj.network.classes[ifdata.class].ipv6.prefix %}
 {%     endif %}
 {%   endif %}
-{{   'export NETIF_%s="%s;%s;%s;%s;%s;%s"' | format(ifname | upper, ifresdata.ipv4_address, ifresdata.ipv4_netmask, ifresdata.ipv4_prefix, ifresdata.ipv6_address, ifresdata.ipv6_prefix, ifdata.static | default("true")) }}
+{{   'export NETIF_%s="%s;%s;%s;%s;%s;%s"' | format(ifname | upper, ifresdata.ipv4_address, ifresdata.ipv4_netmask, ifresdata.ipv4_prefix, ifresdata.ipv6_address, ifresdata.ipv6_prefix, (ifdata.static | default("true")) | lower) }}
 {%   do netifs.append('"%s"' | format(ifname)) %}
 {% endfor %}
 declare -a NETIF_DEVICES=({{ netifs | join(" ") }})