slapos_cloud: Double cache Duration for instance Access

   Since instances typically only access master once a day, double the cache duration to ensure it wasnt flushed between the runs.

master/bt5/slapos_cloud/PathTemplateItem/portal_caches/access_status_data_cache_factory.xml

@@ -26,7 +26,7 @@
         </item>
         <item>
             <key> <string>cache_duration</string> </key>
-            <value> <int>86400</int> </value>
+            <value> <int>172800</int> </value>
         </item>
         <item>
             <key> <string>description</string> </key>