Update docs and scripts for using python3

Python2 is deprecated so we need to switch to python3

Change-Id: Id9158df88f0b6ed0c071994bf0aa240063ac6761

README.rst

@@ -167,7 +167,7 @@ Install prerequisites
 
 ::
 
-    $ sudo pip install -r requirements.txt
+    $ sudo pip3 install -r requirements.txt
 
 
 Installing Kuryr's libnetwork driver
@@ -175,7 +175,7 @@ Installing Kuryr's libnetwork driver
 
 Running the following will grab the requirements and install kuryr::
 
-    $ sudo pip install .
+    $ sudo pip3 install .
 
 
 Configuring Kuryr
@@ -415,12 +415,12 @@ Generating Documentation
 We use `Sphinx <https://pypi.org/project/Sphinx>`_ to maintain the
 documentation. You can install Sphinx using pip::
 
-    $ pip install -U Sphinx
+    $ pip3 install -U Sphinx
 
 In addition to Sphinx you will also need the following requirements
 (not covered by `requirements.txt`)::
 
-    $ pip install openstackdocstheme reno 'reno[sphinx]'
+    $ pip3 install openstackdocstheme reno 'reno[sphinx]'
 
 The source code of the documentation are under *doc*, you can generate the
 html files using the following command. If the generation succeeds,a
@@ -433,7 +433,7 @@ Now you can serve the documentation at http://localhost:8080 as a simple
 website::
 
     $ cd build/html
-    $ python -m SimpleHTTPServer 8080
+    $ python3 -m SimpleHTTPServer 8080
 
 Limitations
 -----------

devstack/plugin.sh

@@ -74,7 +74,7 @@ function configure_kuryr {
 
 # main loop
 if is_service_enabled kuryr-libnetwork; then
-    DISTRO_DISTUTILS_DATA_PATH=$(python -c "import distutils.dist;import distutils.command.install;inst = distutils.command.install.install(distutils.dist.Distribution());inst.finalize_options();print inst.install_data")
+    DISTRO_DISTUTILS_DATA_PATH=$(python3 -c "import distutils.dist;import distutils.command.install;inst = distutils.command.install.install(distutils.dist.Distribution());inst.finalize_options();print(inst.install_data)")
     if [[ "$1" == "stack" && "$2" == "install" ]]; then
         # Install kuryr-lib from git so we make sure we're testing
         # the latest code.

doc/source/install/compute-install-ubuntu.rst

@@ -39,13 +39,13 @@ Install and configure components
 
    .. code-block:: console
 
-      # apt-get install python-pip
+      # apt-get install python3-pip
       # cd /var/lib/kuryr
       # git clone -b master https://git.openstack.org/openstack/kuryr-libnetwork.git
       # chown -R kuryr:kuryr kuryr-libnetwork
       # cd kuryr-libnetwork
-      # pip install -r requirements.txt
-      # python setup.py install
+      # pip3 install -r requirements.txt
+      # python3 setup.py install
 
 #. Generate a sample configuration file:
 

scripts/run_kuryr.sh

@@ -105,5 +105,5 @@ if [[ $KURYR_USE_UWSGI == "True" ]]; then
         --threads "$KURYR_UWSGI_THREADS" \
         "${UWSGI_ADDITIONAL_ARGS[@]}"
 else
-    PYTHONPATH="${KURYR_HOME}" python "${KURYR_HOME}/scripts/run_server.py"  --config-file "${KURYR_CONFIG}" "$@"
+    PYTHONPATH="${KURYR_HOME}" python3 "${KURYR_HOME}/scripts/run_server.py"  --config-file "${KURYR_CONFIG}" "$@"
 fi

tools/generate_config_file_samples.sh

@@ -27,7 +27,7 @@ prerequisites() (
     if ! [ -f "${DIST_PATH}/kuryr_libnetwork.egg-info/entry_points.txt" ]; then
         curr_dir=$(pwd)
         cd "${DIST_PATH}"
-        python setup.py egg_info  # Generate entrypoints for config generation
+        python3 setup.py egg_info  # Generate entrypoints for config generation
         cd "${curr_dir}"
     fi