[ingress] bump version

Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

packages/extra/ingress/Chart.yaml

@@ -3,4 +3,4 @@ name: ingress
 description: NGINX Ingress Controller
 icon: /logos/ingress-nginx.svg
 type: application
-version: 1.5.1
+version: 1.6.0

packages/extra/versions_map

@@ -19,7 +19,7 @@ ingress 1.2.0 28fca4ef
 ingress 1.3.0 fde4bcfa
 ingress 1.4.0 fd240701
 ingress 1.5.0 93bdf411
-ingress 1.5.1 HEAD
+ingress 1.6.0 HEAD
 monitoring 1.0.0 d7cfa53c
 monitoring 1.1.0 25221fdc
 monitoring 1.2.0 f81be075