[BEAM-12621] Add python installer tool and documentation

.test-infra/tools/README.md

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+<!--
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+-->
+
+> **PLEASE update this file if you add a new tool or update an existing one**
+
+## Tools
+
+- [Python installer](#python-installer)
+
+### Python installer
+
+It is a tool that installs pyenv and its dependencies, as well as different
+versions of python through pyenv. It was developed during the Ubuntu update
+of the Jenkins image.
+
+**Warning:** This tool was conceived to install pyenv and python versions in a clean
+environment. If you want to use this install in other cases, we recommend
+that you make the required modifications manually and then run the tool.
+
+#### Use
+
+To use the tool, they only have to download the script and execute it with the
+following command.
+
+```bash
+bash ./python_installer.sh
+```
+
+#### Modification
+
+If you want to modify the python versions to install, you must add/remove the
+versions within that are defined within the `python_versiones_arr` variable.
+Example:
+
+- Original
+
+```bash
+python_versions_arr=("3.6.13" "3.7.10" "3.8.9" "3.9.4")
+```
+
+- Change
+
+```bash
+python_versions_arr=("3.6.13" "3.7.10" "3.9.0" "3.10.2")
+```

.test-infra/tools/python_installer.sh

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+#!/usr/bin/env bash
+#
+#    Licensed to the Apache Software Foundation (ASF) under one or more
+#    contributor license agreements.  See the NOTICE file distributed with
+#    this work for additional information regarding copyright ownership.
+#    The ASF licenses this file to You under the Apache License, Version 2.0
+#    (the "License"); you may not use this file except in compliance with
+#    the License.  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the spefic language governing permissions and
+#    limitations under the License.
+#
+#    Python version 3.6.13-3.7.10-3.8.9-3.9.4 installer via pyenv.
+#
+set -euo pipefail
+
+# Variable containing the python versions to install
+python_versions_arr=("3.6.13" "3.7.10" "3.8.9" "3.9.4")
+
+# Install pyenv dependencies.
+pyenv_dep(){
+  sudo apt-get update -y
+  sudo apt-get install -y make build-essential libssl-dev zlib1g-dev \
+libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm \
+libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev
+}
+
+# Install pyenv, delete previous version if needed.
+pyenv_install(){
+  if [[ -d "$HOME"/.pyenv/ ]]; then
+    sudo rm -r "$HOME"/.pyenv
+  fi
+  if [[ -e "$HOME"/pyenv_installer.sh ]]; then
+    sudo rm "$HOME"/pyenv_installer.sh
+  fi
+  curl https://pyenv.run > "$HOME"/pyenv_installer.sh
+  chmod +x "$HOME"/pyenv_installer.sh
+  "$HOME"/pyenv_installer.sh
+}
+
+# Setting pyenv in User environment, PATH.
+pyenv_post_install(){
+  if ! < "$HOME"/.bashrc grep -q "# pyenv Config" ; then
+    {
+      echo '# pyenv Config'
+      echo 'export PYENV_ROOT="$HOME/.pyenv"'
+      echo 'export PATH="$PYENV_ROOT/bin:$PATH"'
+      echo 'if which pyenv > /dev/null; then'
+      echo '  eval "$(pyenv init -)"'
+      echo '  eval "$(pyenv init --path)"'
+      echo '  eval "$(pyenv virtualenv-init -)"'
+      echo 'fi'
+    } >> "$HOME"/.bashrc
+  fi
+}
+
+# Install python versions with pyenv
+pyenv_versions_install(){
+  arr=("$@")
+  for version in "${arr[@]}"; do
+    "$HOME"/.pyenv/bin/pyenv install "$version"
+  done
+}
+
+# Setting python versions globally 
+python_versions_setglobally(){
+  "$HOME"/.pyenv/bin/pyenv global "$@"
+}
+
+# Remove pyenv script installer
+clean(){
+  sudo rm "$HOME"/pyenv_installer.sh
+  echo -e "\nRestart your shell so the path changes take effect"
+  echo "    'exec $SHELL'" 
+}
+
+# Install pyenv environment with python versions
+pyenv(){
+  pyenv_dep
+  pyenv_install
+  pyenv_post_install
+  pyenv_versions_install "${python_versions_arr[@]}"
+  python_versions_setglobally "${python_versions_arr[@]}"
+  clean
+}
+
+pyenv