Setting imagePullPolicy to Always

Change-Id: Iada3d3656a672154da6641c3ee55b57ec4c28fcb
diff --git a/xos-core/values.yaml b/xos-core/values.yaml
index 66130f5..a2fc5ff 100644
--- a/xos-core/values.yaml
+++ b/xos-core/values.yaml
@@ -16,7 +16,7 @@
 xos_gui:
   enabled: true
 
-imagePullPolicy: 'IfNotPresent'
+imagePullPolicy: 'Always'
 
 # Docker images
 # YAML variable names can't contain `-`, so substituted with `_`