add metadata files

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

files/dnsmasq.service

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+[Unit]
+Description=dnsmasq in netns %i
+After=network.target
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/run-dnsmasq-in-netns.sh %i
+ExecStopPost=/bin/rm -f /run/dnsmasq-%i.pid
+
+[Install]
+WantedBy=multi-user.target

files/dnsmasq.sh

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+#!/bin/bash
+set -e
+
+# Expects one argument: netns_bridge (e.g. vpc-00003_br-00002 or vpc1_br0)
+arg="$1"
+NETNS="${arg%%_*}"
+BRIDGE="${arg#*_}"
+
+echo "start dnsmasq ${NETNS} ${BRIDGE}"
+
+exec ip netns exec "${NETNS}" \
+  dnsmasq \
+    --no-daemon \
+    --interface="${BRIDGE}" \
+    --bind-interfaces \
+    --pid-file="/run/dnsmasq-$arg.pid" \
+    --conf-file="/etc/dnsmasq.d/$arg.conf" \
+    --no-hosts \
+    --no-resolv \
+    --log-facility="/var/log/dnsmasq-$arg.log" \
+    --no-daemon -p0

files/metadata.service

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+[Unit]
+Description=metadata in netns %i
+After=network.target
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/run-metadata-in-netns.sh %i
+
+[Install]
+WantedBy=multi-user.target

files/metadata.sh

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+#!/bin/bash
+set -e
+
+# Expects one argument: netns_bridge (e.g. vpc-00003_br-00002 or vpc1_br0)
+arg="$1"
+NETNS="${arg%%_*}"
+ip_port="${arg#*_}"
+IP="${ip_port%%-*}"
+PORT="${ip_port#*-}"
+
+echo "start metadata ${NETNS} "
+
+exec ip netns exec "${NETNS}" \
+  /usr/bin/metadata \
+    -file "/opt/metadata/${arg}.json" \
+    -interface "${IP}" \
+    -port "${PORT}"