Update MNAIO to use python3

This patch updates the bootstrap script for the MNAIO to use python3
rather than python2.7. This only impacts the deploy node and not
deployed VMs.

Change-Id: I41b5d746a8f31018e15bd282b7a358d50610eabb

multi-node-aio/bootstrap.sh

@@ -39,21 +39,21 @@ case "${ID,,}" in
         sudo yum install -y python-devel redhat-lsb-core
         ;;
     ubuntu|debian)
-        sudo apt-get update && sudo apt-get install -y python-dev lsb-release
+        sudo apt-get update && sudo apt-get install -y python3-dev lsb-release
         ;;
     *)
         echo "Unsupported distribution: ${ID,,}"
         exit 1
 esac
 
-# Install pip
-if ! which pip &>/dev/null; then
+# Install pip3
+if ! which pip3 &>/dev/null; then
     curl --silent --show-error --retry 5 \
-        https://bootstrap.pypa.io/3.2/get-pip.py | sudo python2.7
+        https://bootstrap.pypa.io/3.4/get-pip.py | sudo python3
 fi
 
 # Install bindep and tox
-sudo pip install 'bindep>=2.4.0' tox
+sudo pip3 install 'bindep>=2.4.0' tox
 
 # CentOS 7 requires two additional packages:
 #   redhat-lsb-core - for bindep profile support
@@ -65,7 +65,7 @@ if [[ ${ID,,} == "centos" ]]; then
     sudo yum-config-manager --enable epel || true
 # openSUSE 42.1 does not have python-ndg-httpsclient
 elif [[ ${ID,,} == *suse* ]] && [[ ${VERSION} == "42.1" ]]; then
-    sudo pip install ndg-httpsclient
+    sudo pip3 install ndg-httpsclient
 fi
 
 # Get a list of packages to install with bindep. If packages need to be
@@ -92,7 +92,7 @@ if [[ ${#BINDEP_PKGS} > 0 ]]; then
 fi
 
 # Install latest OSA supported Ansible version
-sudo pip install -r https://opendev.org/openstack/openstack-ansible-tests/raw/branch/${OSA_DEPS_BRANCH}/test-ansible-deps.txt
+sudo pip3 install -r https://opendev.org/openstack/openstack-ansible-tests/raw/branch/${OSA_DEPS_BRANCH}/test-ansible-deps.txt
 
 # Get the latest OSA plugins
 # This is used to allow access from the MNAIO host to