tests: split etc_environment test in two

Turns out nobody supports ~/.pam_environment any more. Keep the
behaviour around for the time being.

tests/ansible/integration/runner/_etc_environment_global.yml

@@ -0,0 +1,35 @@
+# /etc/environment
+
+- file:
+    path: /etc/environment
+    state: absent
+  become: true
+
+- shell: echo $MAGIC_ETC_ENV
+  register: echo
+
+- assert:
+    that: echo.stdout == ""
+
+- copy:
+    dest: /etc/environment
+    content: |
+      MAGIC_ETC_ENV=555
+  become: true
+
+- shell: echo $MAGIC_ETC_ENV
+  register: echo
+
+- assert:
+    that: echo.stdout == "555"
+
+- file:
+    path: /etc/environment
+    state: absent
+  become: true
+
+- shell: echo $MAGIC_ETC_ENV
+  register: echo
+
+- assert:
+    that: echo.stdout == ""

tests/ansible/integration/runner/_etc_environment_user.yml

@@ -0,0 +1,32 @@
+# ~/.pam_environment
+
+- file:
+    path: ~/.pam_environment
+    state: absent
+
+- shell: echo $MAGIC_PAM_ENV
+  register: echo
+
+- assert:
+    that: echo.stdout == ""
+
+- copy:
+    dest: ~/.pam_environment
+    content: |
+      MAGIC_PAM_ENV=321
+
+- shell: echo $MAGIC_PAM_ENV
+  register: echo
+
+- assert:
+    that: echo.stdout == "321"
+
+- file:
+    path: ~/.pam_environment
+    state: absent
+
+- shell: echo $MAGIC_PAM_ENV
+  register: echo
+
+- assert:
+    that: echo.stdout == ""

tests/ansible/integration/runner/etc_environment.yml

@@ -3,78 +3,13 @@
 # but less likely to brick a development workstation
 
 - name: integration/runner/etc_environment.yml
-  hosts: test-targets
+  hosts: test-targets[0]
   any_errors_fatal: true
   gather_facts: true
   tasks:
-    # ~/.pam_environment
+    - include_tasks: _etc_environment_user.yml
+      when: ansible_system == "Linux" and is_mitogen
 
-    - file:
-        path: ~/.pam_environment
-        state: absent
-
-    - shell: echo $MAGIC_PAM_ENV
-      register: echo
-
-    - assert:
-        that: echo.stdout == ""
-
-    - copy:
-        dest: ~/.pam_environment
-        content: |
-          MAGIC_PAM_ENV=321
-
-    - shell: echo $MAGIC_PAM_ENV
-      register: echo
-
-    - assert:
-        that: echo.stdout == "321"
-
-    - file:
-        path: ~/.pam_environment
-        state: absent
-
-    - shell: echo $MAGIC_PAM_ENV
-      register: echo
-
-    - assert:
-        that: echo.stdout == ""
-
-
-    # /etc/environment
-    - meta: end_play
-      when: ansible_virtualization_type != "docker"
-
-    - file:
-        path: /etc/environment
-        state: absent
-      become: true
-
-    - shell: echo $MAGIC_ETC_ENV
-      register: echo
-
-    - assert:
-        that: echo.stdout == ""
-
-    - copy:
-        dest: /etc/environment
-        content: |
-          MAGIC_ETC_ENV=555
-      become: true
-
-    - shell: echo $MAGIC_ETC_ENV
-      register: echo
-
-    - assert:
-        that: echo.stdout == "555"
-
-    - file:
-        path: /etc/environment
-        state: absent
-      become: true
-
-    - shell: echo $MAGIC_ETC_ENV
-      register: echo
-
-    - assert:
-        that: echo.stdout == ""
+    - include_tasks: _etc_environment_global.yml
+      # Don't destroy laptops.
+      when: ansible_virtualization_type == "docker"