Add nodeSelctor to omasim

Also, change "conf" to "config" for consistency with omec charts.

Change-Id: I6db9a4d51a131292df1c78b65ed7306d1748388c
diff --git a/oaisim/values.yaml b/oaisim/values.yaml
index 6859207..b9d87f0 100644
--- a/oaisim/values.yaml
+++ b/oaisim/values.yaml
@@ -18,7 +18,17 @@
     enb: omecproject/lte-softmodem:1.0.0
     ue: omecproject/lte-uesoftmodem:1.0.0
   pullPolicy: IfNotPresent
-conf:
+
+nodeSelectors:
+  enabled: false
+  enb:
+    label: oaisim
+    value: enabled
+  ue:
+    label: oaisim
+    value: enabled
+
+config:
   # 1 PLMN is supported for now
   plmn:
     name: "COMAC Test Network"