Fix glance image protected type to bool

Glance API doesn't perform conversion from string to bool, as
result even value 'false' become true which introduce races
in the state. This patch updated default value to boolean.

Change-Id: Ic55aeb08e4f592355d8c7f0807707fc648ce245b
Related-Prod: PROD-30353
diff --git a/glance/client.sls b/glance/client.sls
index b7cafcf..83d3697 100644
--- a/glance/client.sls
+++ b/glance/client.sls
@@ -13,7 +13,7 @@
 {%- set _image_properties = {} %}
 {%- do _image_properties.update({'container_format': image.container_format}) %}
 {%- do _image_properties.update({'disk_format': image.disk_format}) %}
-{%- do _image_properties.update({'protected': 'false'}) %}
+{%- do _image_properties.update({'protected': false}) %}
 {%- do _image_properties.update({'tags': image.tags}) %}
 {%- do _image_properties.update({'visibility': image.visibility}) %}