Deployment check: deploy, bootstrap and list Avocado-VT tests

Avocado-VT is a separate project, but it's a very important one,
and it should always be kept working with Avocado.

This adds the Python dependencies that are hard or impossible to
install via PIP, and so that they're available on the virtual
environment, a "site packages" options is set.

We then bootstrap Avocado-VT and finally sure that one of the common
tests is present.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

selftests/deployment/README

@@ -15,7 +15,8 @@ followed:
 
  4) Run a playbook with: ansible-playbook <PLAYBOOK_FILE_NAME>
 
-The following playbooks Ansible are available here:
+The following Ansible playbooks are available here:
 
- - pip-git.yml: deployment Avocado using pip, from a GIT repository,
-   on a Python virtual environment.
+ - pip-git.yml: deployment of Avocado and Avocado-VT using pip, from a
+   GIT repository, on a Python virtual environment.  Tested on EL7,
+   Fedora 28 and Fedora 29.

selftests/deployment/pip-git.yml

@@ -5,6 +5,9 @@
     avocado_git_url: https://github.com/avocado-framework/avocado.git
     avocado_git_branch: master
     avocado_egg_name: avocado-framework
+    avocado_vt_git_url: https://github.com/avocado-framework/avocado-vt.git
+    avocado_vt_git_branch: master
+    avocado_vt_egg_name: avocado-plugins-vt
     avocado_python_rpm_packages:
       - python-pip
       # pip install "git+https://" quite obviously requires git
@@ -23,6 +26,7 @@
       pip:
         name: "git+{{ avocado_git_url}}@{{ avocado_git_branch }}#egg={{ avocado_egg_name }}"
         virtualenv: "{{ temporary_dir.path }}"
+        virtualenv_site_packages: yes
     - name: Avocado version
       shell: "{{ temporary_dir.path }}/bin/avocado --version"
       changed_when: false
@@ -62,3 +66,12 @@
       pip:
         name: "git+{{ avocado_git_url}}@{{ avocado_git_branch }}#egg=avocado-framework-plugin-loader-yaml&subdirectory=optional_plugins/loader_yaml"
         virtualenv: "{{ temporary_dir.path }}"
+    - include_tasks: tasks/avocado_vt_rpm_pkgs.yml
+    - name: Avocado-VT plugin installation via pip
+      pip:
+        name: "git+{{ avocado_vt_git_url}}@{{ avocado_vt_git_branch }}#egg={{ avocado_vt_egg_name }}"
+        virtualenv: "{{ temporary_dir.path }}"
+    - name: Avocado-VT bootstrap
+      shell: "{{ temporary_dir.path }}/bin/avocado vt-bootstrap --yes-to-all --vt-skip-verify-download-assets"
+    - name: Avocado-VT test available
+      shell: "{{ temporary_dir.path }}/bin/avocado list boot"

selftests/deployment/tasks/avocado_vt_rpm_pkgs.yml

+---
+  - name: Install Avocado-VT Depedencies on Red Hat (like) systems
+    package:
+      name: "{{ item }}"
+      state: latest
+    with_items:
+      - gcc
+      - nc
+      - python-netaddr
+      - python-netifaces
+      - python2-aexpect
+      - qemu-img
+      - qemu-kvm
+      - tcpdump
+    when: ansible_facts['distribution_file_variety'] == "RedHat"