Migrate Linux CI roles to test targets. (#17997)

test/integration/targets/include_vars/tasks/main.yml

@@ -0,0 +1,86 @@
+---
+- name: verify that the default value is indeed 1
+  assert:
+    that:
+      - "testing == 1"
+      - "base_dir == 'defaults'"
+
+- name: include the vars/environments/development/all.yml
+  include_vars:
+    file: environments/development/all.yml
+    
+- name: verify that the default value is indeed 789
+  assert:
+    that:
+      - "testing == 789"
+      - "base_dir == 'environments/development'"
+
+- name: include the vars/environments/development/all.yml and save results in all
+  include_vars:
+    file: environments/development/all.yml
+    name: all
+    
+- name: verify that the values are stored in the all variable
+  assert:
+    that:
+      - "all['testing'] == 789"
+      - "all['base_dir'] == 'environments/development'"
+
+- name: include the all directory in vars
+  include_vars:
+    dir: all
+    depth: 1
+    
+- name: verify that the default value is indeed 123
+  assert:
+    that:
+      - "testing == 123"
+      - "base_dir == 'all'"
+
+- name: include every directory in vars
+  include_vars:
+    dir: vars
+    
+- name: verify that the variable overwrite based on alphabetical order
+  assert:
+    that:
+      - "testing == 456"
+      - "base_dir == 'services'"
+      - "webapp_containers == 10"
+
+- name: include every directory in vars except files matching webapp.yml
+  include_vars:
+    dir: vars
+    ignore_files:
+      - webapp.yml
+    
+- name: verify that the webapp.yml file was not included
+  assert:
+    that:
+      - "testing == 789"
+      - "base_dir == 'environments/development'"
+
+- name: include only files matching webapp.yml
+  include_vars:
+    dir: environments
+    files_matching: webapp.yml
+
+- name: verify that only files matching webapp.yml and in the environments directory get loaded.
+  assert:
+    that:
+      - "testing == 101112"
+      - "base_dir == 'development/services'"
+      - "webapp_containers == 20"
+
+- name: include only files matching webapp.yml and store results in webapp
+  include_vars:
+    dir: environments
+    files_matching: webapp.yml
+    name: webapp
+
+- name: verify that only files matching webapp.yml and in the environments directory get loaded into stored variable webapp.
+  assert:
+    that:
+      - "webapp['testing'] == 101112"
+      - "webapp['base_dir'] == 'development/services'"
+      - "webapp['webapp_containers'] == 20"