Feature 11002: Deprecate helmv2

Fixes I77fb144d533f58ff927bda9382dbc6cba0f0dbd6

Change-Id: Ieaef4f4d2d50ac28db45fb447e6656f79e38771a
Signed-off-by: Luis Vega <lvega@whitestack.com>
diff --git a/osm_nbi/validation.py b/osm_nbi/validation.py
index 4226fd6..1bf597c 100644
--- a/osm_nbi/validation.py
+++ b/osm_nbi/validation.py
@@ -819,7 +819,7 @@
         "helm-chart-v3": {"type": "boolean"},
     },
     "additionalProperties": False,
-    "minProperties": 3,
+    "minProperties": 2,
 }
 k8scluster_nets_schema = {
     "title": "k8scluster nets input schema",