Remove redundant pip install task

We can clean up our install tasks by using an include.

Change-Id: I48d5259befa2e6733e1750f56245ac6e5eff48fe
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

tasks/install/git.yaml

@@ -19,9 +19,8 @@
     repo: "{{ nodepool_git_uri }}"
     version: "{{ nodepool_git_version }}"
 
-- name: Pip install nodepool from local git repo.
-  become: yes
-  pip:
-    extra_args: "{{ nodepool_pip_extra_args|default(omit) }}"
-    name: "file://{{ nodepool_git_dest }}"
-    virtualenv: "{{ nodepool_pip_virtualenv|default(omit) }}"
+- name: Set nodepool_pip_name to local git repo.
+  set_fact:
+    nodepool_pip_name: "file://{{ nodepool_git_dest }}"
+
+- include: pip.yaml