Update Python env installation

Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
Change-Id: I69d6ae298d31da1fd61ccb5206f6c2f9e87f3ea7
diff --git a/packer/provision/redis.yaml b/packer/provision/redis.yaml
index 5c45962..b97437b 100644
--- a/packer/provision/redis.yaml
+++ b/packer/provision/redis.yaml
@@ -24,11 +24,11 @@
         state: started
       become: true
 
-    - name: Install Python 3.6 and packages
+    - name: Install Python 3.6
       yum:
         name:
-          - python36u
-          - python36u-libs
-          - python36u-devel
+          - epel-release
+          - python36
+        update_cache: yes
         state: latest
       become: true