remove pip installs for android utils

playbooks/roles/android_sdk/tasks/main.yml

@@ -57,3 +57,11 @@
     update_cache: yes
     state: present
   with_items: "{{ android_apt_libraries }}"
+# Link adb to tools, where all the rest of the android tools are
+- name: Add symlink for adb
+  file:
+    src: "{{ android_home }}/platform-tools/adb"
+    dest: "{{ android_home }}/tools/adb"
+    state: link
+    owner: "{{ android_user }}"
+    group: "{{ android_group }}"

playbooks/roles/jenkins_worker/tasks/android_testing_tools.yml

----
-
-# Install Python packages used for testing the edX Android app on Jenkins
-# Note: normally, we use a virtual environment for pip installs on a Jenkins 
-# worker, but since this is the only instance of python being used on the machine
-# we install them as system packages. If we start requiring more python, or
-# add other jobs to this worker, please reconsider this.
-- name: Install Android testing requirements using pip
-  pip:
-    name: "{{ item }}"
-    state: present
-    extra_args: "--user --exists-action=w"
-    executable: pip
-  with_items:
-    - pillow
-    - codecov

playbooks/roles/jenkins_worker/tasks/main.yml

@@ -14,10 +14,6 @@
 - include: python_platform_worker.yml
   when: platform_worker is defined
 
-# Only Android workers
-- include: android_testing_tools.yml
-  when: android_worker is defined
-
 # Run appropriate tests
 - include: test.yml
 - include: test_platform_worker.yml