Making default time ranges on grafana endpoint pages consistent with grid page

Author: arlake228

psconfig/perfsonar-psconfig/templates/dns.json.j2

@@ -400,7 +400,7 @@
     ]
   },
   "time": {
-    "from": "now-6h",
+    "from": "now-24h",
     "to": "now"
   },
   "timepicker": {},

psconfig/perfsonar-psconfig/templates/endpoints.json.j2

@@ -3638,7 +3638,7 @@
     ]
   },
   "time": {
-    "from": "now-6h",
+    "from": "now-24h",
     "to": "now"
   },
   "timepicker": {},

psconfig/perfsonar-psconfig/templates/http.json.j2

@@ -233,7 +233,7 @@
     ]
   },
   "time": {
-    "from": "now-6h",
+    "from": "now-24h",
     "to": "now"
   },
   "timepicker": {},