travis: Install pip to install pytest in "all" tests

This allows ./configure to detect py.test, and execute python unit tests we
provide in the vici python egg.

.travis.yml

@@ -8,6 +8,7 @@ before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -qq bison flex gperf gettext
   - ./scripts/test.sh deps
+  - ./scripts/test.sh pydeps
 
 script:
   - ./autogen.sh

scripts/test.sh

@@ -52,7 +52,8 @@ all)
 	DEPS="$DEPS libcurl4-gnutls-dev libsoup2.4-dev libunbound-dev libldns-dev
 		  libmysqlclient-dev libsqlite3-dev clearsilver-dev libfcgi-dev
 		  libnm-glib-dev libnm-glib-vpn-dev libpcsclite-dev libpam0g-dev
-		  binutils-dev libunwind7-dev libjson0-dev iptables-dev"
+		  binutils-dev libunwind7-dev libjson0-dev iptables-dev python-pip"
+	PYDEPS="pytest"
 	;;
 win*)
 	CONFIG="--disable-defaults --enable-svc --enable-ikev2
@@ -95,6 +96,11 @@ if test "$1" = "deps"; then
 	exit $?
 fi
 
+if test "$1" = "pydeps"; then
+	test -z "$PYDEPS" || sudo pip -q install $PYDEPS
+	exit $?
+fi
+
 CONFIG="$CONFIG
 	--enable-silent-rules
 	--enable-test-vectors