Backport some env tweaks

.env.example

@@ -2,7 +2,8 @@ APP_ENV=local
 APP_DEBUG=true
 APP_KEY=SomeRandomString
 
-DB_HOST=localhost
+DB_CONNECTION=mysql
+DB_HOST=127.0.0.1
 DB_DATABASE=homestead
 DB_USERNAME=homestead
 DB_PASSWORD=secret
@@ -11,7 +12,7 @@ CACHE_DRIVER=file
 SESSION_DRIVER=file
 QUEUE_DRIVER=sync
 
-REDIS_HOST=localhost
+REDIS_HOST=127.0.0.1
 REDIS_PASSWORD=null
 REDIS_PORT=6379