Add python3-dev

The gate-neutron-dsvm-functional-py34 job needs Python.h, and it is
currently not available when running Python 3.

Change-Id: I00ce26864db682a4577dc5360519918007aa5499
Partial-Bug: #1500400

jenkins/data/bindep-fallback.txt

@@ -63,7 +63,9 @@ postgresql-server [platform:rpm]
 pypy [platform:ubuntu-trusty]
 pypy-dev [platform:ubuntu-trusty]
 python-dev [platform:dpkg]
+python3-dev [platform:dpkg]
 python-devel [platform:rpm]
+python3-devel [platform:rpm]
 python-libvirt [platform:dpkg]
 python-lxml
 python-zmq

nodepool/elements/node-devstack/package-installs.yaml

@@ -1,2 +1,3 @@
 build-essential:
 python-dev:
+python3-dev:

nodepool/scripts/install_devstack_dependencies.sh

@@ -20,7 +20,7 @@ mkdir -p ~/cache/files
 mkdir -p ~/cache/pip
 
 if [ -f /usr/bin/yum ]; then
-    sudo yum -y install python-devel make automake gcc gcc-c++ \
+    sudo yum -y install python-devel python3-devel make automake gcc gcc-c++ \
         kernel-devel redhat-lsb-core
 elif [ -f /usr/bin/apt-get ]; then
     if [ "$(lsb_release -c -s)" = "precise" ]; then
@@ -38,11 +38,11 @@ elif [ -f /usr/bin/apt-get ]; then
             --assume-yes install --reinstall linux-headers-3.2.0-69 \
             linux-headers-3.2.0-69-virtual \
             linux-image-3.2.0-69-virtual \
-            python-software-properties build-essential python-dev
+            python-software-properties build-essential python-dev python3-dev
     else
         sudo DEBIAN_FRONTEND=noninteractive apt-get \
             --option "Dpkg::Options::=--force-confold" \
-            --assume-yes install build-essential python-dev \
+            --assume-yes install build-essential python-dev python3-dev \
             python-software-properties linux-headers-virtual linux-headers-$(uname -r)
     fi
 else