Replace virtualenv-tools by a script

virtualenv-tools has a bug which gets triggered in gates: it can't
change the shebang of a virtualenv python bin/ files if they
were generated with a virtualenv script whose shebang ends with
python2 instead of python.

Because we can't modify virtualenv-tools, we use shell scripts
instead.

Change-Id: If934acbcfe81578366d1ecc0c5fec7c6de5b2040
Partial-Bug: #1741634
(cherry picked from commit 01597f254c)

defaults/main.yml

@@ -103,7 +103,6 @@ aodh_service_in_ldap: false
 # aodh packages that must be installed before anything else
 aodh_requires_pip_packages:
   - virtualenv
-  - virtualenv-tools
   - python-keystoneclient # Keystoneclient needed to OSA keystone lib
   - httplib2
 

tasks/aodh_install.yml

@@ -123,9 +123,13 @@
     - aodh_get_venv | changed
 
 - name: Update virtualenv path
-  command: >
-    virtualenv-tools --update-path=auto --reinitialize {{ aodh_bin | dirname }}
+  shell: |
+    find {{ aodh_bin }} -name \*.pyc -delete
+    sed -si '1s/^.*python.*$/#!{{ aodh_bin | replace ('/','\/') }}\/python/' {{ aodh_bin }}/*
+    virtualenv {{ aodh_bin | dirname }}
   when: aodh_get_venv | changed
+  tags:
+    - skip_ansible_lint
 
 - name: Record the venv tag deployed
   ini_file: