tasks: glance_install: Fix virtualenv-tools issue on openSUSE

openSUSE is also suffering from the same virtualenv-tools issue so
we need to remove the existing python-2.7 symlink.

Link: fireteam/virtualenv-tools#5
Related-Bug: #1637509
Partial-Bug: #1644629
Change-Id: Iff9ddc29903a278dac7ab941fe7bd5bae1702bb7
(cherry picked from commit a6f93be)

tasks/glance_install.yml

@@ -101,12 +101,12 @@
   notify:
     - Restart glance services
 
-- name: CentOS remove python from path first
+- name: Remove python from path first (CentOS, openSUSE)
   file:
     path:  "{{ glance_bin | dirname }}/bin/python2.7"
     state: "absent"
   when:
-    - ansible_pkg_mgr in ['yum', 'dnf']
+    - ansible_pkg_mgr in ['yum', 'dnf', 'zypper']
     - glance_get_venv | changed
 
 - name: Update virtualenv path