Fix remote play for backup and restore

This change fixes the cases where ansible is looking for vars file on
the AnsibleController instead of the remote StarlingX. Also, this
file adds requirements.txt and uses it for the tox "venv" setup in
order to provide an wasy way for a user to create an environment to
remotely run ansible with the same toolset we have on a StarlingX ISO.

TEST PLAN
PASS remote play for backup
PASS local play for backup
PASS remote play for restore
PASS local play for restore

Closes-Bug: #1986691
Signed-off-by: Thiago Brito <thiago.brito@windriver.com>
Change-Id: I27ea61428afafbd12434fca6f7bef4526ee01559

playbookconfig/src/playbooks/roles/common/prepare-env/tasks/kube-extra-save-configuration.yml

@@ -10,8 +10,35 @@
 #   backup is running.
 #
 - name: Read in last kubernetes config values (extraArgs and extraVolumes)
-  include_vars:
-    file: "{{ config_permdir }}/last_kube_extra_config_bootstrap.yaml"
+  block:
+    - name: Check if load has last_kube_extra_config_bootstrap.yaml
+      stat:
+        path: "{{ config_permdir }}/last_kube_extra_config_bootstrap.yaml"
+      register: load_has_extra_config
+
+    - name: Read last_kube_extra_config_bootstrap.yaml if it exists
+      block:
+
+        - name: Read last kubernetes config yaml file
+          command: "cat {{ config_permdir }}/last_kube_extra_config_bootstrap.yaml"
+          register: result
+
+        - name: Get last kubernetes config facts
+          set_fact:
+            last_kube_extra_config: "{{ result.stdout | from_yaml }}"
+
+        - name: Set last kubernetes config facts
+          set_fact:
+            apiserver_extra_args: "{{ last_kube_extra_config.apiserver_extra_args }}"
+            controllermanager_extra_args: "{{ last_kube_extra_config.controllermanager_extra_args }}"
+            scheduler_extra_args: "{{ last_kube_extra_config.scheduler_extra_args }}"
+            kubelet_configurations: "{{ last_kube_extra_config.kubelet_configurations }}"
+            apiserver_extra_volumes: "{{ last_kube_extra_config.apiserver_extra_volumes }}"
+            controllermanager_extra_volumes: "{{ last_kube_extra_config.controllermanager_extra_volumes }}"
+            scheduler_extra_volumes: "{{ last_kube_extra_config.scheduler_extra_volumes }}"
+
+      when: load_has_extra_config.stat.exists
+
   when: mode == 'backup'
 
 - name: Append kubernetes extra configuration (extraArgs and extraVolumes)
@@ -20,17 +47,24 @@
     marker: ""
     create: yes
     block: |
-      apiserver_extra_args:
-      {{ apiserver_extra_args | to_nice_yaml | indent(2, indentfirst=True) }}
-      controllermanager_extra_args:
-      {{ controllermanager_extra_args | to_nice_yaml | indent(2, indentfirst=True) }}
-      scheduler_extra_args:
-      {{ scheduler_extra_args | to_nice_yaml | indent(2, indentfirst=True) }}
-      kubelet_configurations:
-      {{ kubelet_configurations | to_nice_yaml | indent(2, indentfirst=True) }}
-      apiserver_extra_volumes:
-      {{ apiserver_extra_volumes | to_yaml | indent(2, indentfirst=True) }}
-      controllermanager_extra_volumes:
-      {{ controllermanager_extra_volumes | to_yaml | indent(2, indentfirst=True) }}
-      scheduler_extra_volumes:
-      {{ scheduler_extra_volumes | to_yaml | indent(2, indentfirst=True) }}
+      {% if apiserver_extra_args is defined %}
+      apiserver_extra_args: {{ apiserver_extra_args | to_nice_yaml | indent(2, indentfirst=True) }}
+      {% endif %}
+      {% if controllermanager_extra_args is defined %}
+      controllermanager_extra_args: {{ controllermanager_extra_args | to_nice_yaml | indent(2, indentfirst=True) }}
+      {% endif %}
+      {% if scheduler_extra_args is defined %}
+      scheduler_extra_args: {{ scheduler_extra_args | to_nice_yaml | indent(2, indentfirst=True) }}
+      {% endif %}
+      {% if kubelet_configurations is defined %}
+      kubelet_configurations: {{ kubelet_configurations | to_nice_yaml | indent(2, indentfirst=True) }}
+      {% endif %}
+      {% if apiserver_extra_volumes is defined %}
+      apiserver_extra_volumes: {{ apiserver_extra_volumes | to_yaml | indent(2, indentfirst=True) }}
+      {% endif %}
+      {% if controllermanager_extra_volumes is defined %}
+      controllermanager_extra_volumes: {{ controllermanager_extra_volumes | to_yaml | indent(2, indentfirst=True) }}
+      {% endif %}
+      {% if scheduler_extra_volumes is defined %}
+      scheduler_extra_volumes: {{ scheduler_extra_volumes | to_yaml | indent(2, indentfirst=True) }}
+      {% endif %}

requirements.txt

@@ -0,0 +1,4 @@
+ansible==2.10.7
+jinja2==2.11.3
+markupsafe==1.1.1
+netaddr==0.8.0

tox.ini

@@ -10,7 +10,8 @@ setenv = VIRTUAL_ENV={envdir}
          OS_STDERR_CAPTURE=1
          OS_TEST_TIMEOUT=60
          ANSIBLE_LOCAL_TEMP={toxworkdir}/.ansible/tmp
-deps = -r{toxinidir}/test-requirements.txt
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
 
 [testenv:linters]
 basepython = python3