Sample configs: use PostGIS to generate MVT's

NEWS.md

@@ -5,6 +5,7 @@ Released 2018-mm-dd
 
 New features
 - Aggregation time dimensions
+- Update sample configurations to use PostGIS to generate MVT's by default (as in production)
 - Upgrades Windshaft to [4.11.2](https://github.com/CartoDB/Windshaft/blob/4.11.2/NEWS.md#version-4112)
   - `pg-mvt`: Use `query-rewriter` to compose the query to render a MVT tile. If not defined, it will use a Default Query Rewriter.
   - `pg-mvt`: Fix bug while building query and there is no columns defined for the layer.

config/environments/development.js.example

@@ -130,7 +130,7 @@ var config = {
         //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
         //PostGIS 2.4 is required for this to work
         //If disabled it will use Mapnik MVT generation
-        usePostGIS: false
+        usePostGIS: true
       },
       mapnik: {
           // The size of the pool of internal mapnik backend

config/environments/production.js.example

@@ -130,7 +130,7 @@ var config = {
         //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
         //PostGIS 2.4 is required for this to work
         //If disabled it will use Mapnik MVT generation
-        usePostGIS: false
+        usePostGIS: true
       },
       mapnik: {
           // The size of the pool of internal mapnik backend

config/environments/staging.js.example

@@ -130,7 +130,7 @@ var config = {
         //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
         //PostGIS 2.4 is required for this to work
         //If disabled it will use Mapnik MVT generation
-        usePostGIS: false
+        usePostGIS: true
       },
       mapnik: {
           // The size of the pool of internal mapnik backend

config/environments/test.js.example

@@ -130,7 +130,7 @@ var config = {
         //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
         //PostGIS 2.4 is required for this to work
         //If disabled it will use Mapnik MVT generation
-        usePostGIS: false
+        usePostGIS: true
       },
       mapnik: {
           // The size of the pool of internal mapnik backend