Align zoom level settings (#11399)

- allow 0-level for WMS services
- use zoom level 2, centered at 0,0 as new default when tilemap viz opens

test/functional/apps/visualize/_tile_map.js

@@ -57,6 +57,11 @@ export default function ({ getService, getPageObjects }) {
 
         return PageObjects.visualize.collapseChart()
         .then(function () {
+          //level 1
+          return PageObjects.visualize.clickMapZoomOut();
+        })
+        .then(function () {
+          //level 0
           return PageObjects.visualize.clickMapZoomOut();
         })
         .then(function () {