Distro: Add apkg packaging test

The test was written by Maria Matejka, thanks!

Run this using

    apkg test

distro/tests/control

@@ -0,0 +1,3 @@
+Tests: test-bird.sh
+Restrictions: needs-root
+Depends: bird2

distro/tests/test-bird.sh

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+#!/bin/bash
+
+set -e
+
+LOCAL=2001:db8:dead::
+
+EXTERNAL=2001:db8:beef::
+EXTERNAL_NET=${EXTERNAL}/48
+EXTERNAL_NH=${LOCAL}beef
+
+LEARN=2001:db8:feed::
+LEARN_NET=${LEARN}/48
+LEARN_NH=${LOCAL}feed
+
+IFACE=bird-test-dummy
+IFACE_EXISTS=false
+
+BIRD_RUNNING=false
+
+D=$(mktemp -d)
+pushd ${D} >/dev/null
+
+stop_bird() {
+  birdc -l down >/dev/null
+  sleep 1
+  grep -q "<FATAL> Shutdown completed" bird.log
+  [ ! -e bird.pid ]
+  [ ! -e bird.ctl ]
+}
+
+cleanup() {
+  if ${BIRD_RUNNING}; then
+    stop_bird
+    if [ -e bird.pid ]; then
+      kill -9 $(<bird.pid)
+    fi
+  fi
+
+  if ${IFACE_EXISTS}; then
+    ip link del ${IFACE}
+  fi
+
+
+  popd > /dev/null
+  rm -rf ${D}
+}
+
+failed() {
+  cleanup
+  exit 1
+}
+
+trap failed ERR
+trap failed INT
+trap failed HUP
+
+ip link add ${IFACE} type dummy
+IFACE_EXISTS=true
+
+ip link set ${IFACE} up
+ip -6 addr add ${LOCAL}/64 dev bird-test-dummy
+
+ip -6 route add ${LEARN_NET} via ${LEARN_NH}
+
+cat >bird.conf <<EOF
+log "bird.log" all;
+
+protocol device {}
+
+protocol kernel {
+  ipv6 { import all; export all; };
+  learn;
+}
+
+protocol static {
+  ipv6;
+  route ${EXTERNAL_NET} via ${EXTERNAL_NH};
+}
+EOF
+
+bird -l -P bird.pid
+
+if [ ! -S bird.ctl ] || [ ! -f bird.pid ] || [ ! -f bird.log ]; then
+  failed
+fi
+
+BIRD_RUNNING=true
+
+ROUTE_INSERTED=false
+for _ in $(seq 10); do
+  if ip -6 route show ${EXTERNAL_NET} | egrep -q "${EXTERNAL_NET} via ${EXTERNAL_NH} dev ${IFACE} proto bird metric [0-9]+ pref medium"; then
+      ROUTE_INSERTED=true
+      break
+  fi
+  sleep 1
+done
+
+$ROUTE_INSERTED || failed
+
+if birdc -l show route "${LEARN_NET}" | egrep -q "Network not found"; then
+  failed
+fi
+
+cleanup
+exit 0