HotFix for #356 : default nuget version

Nuget repo creation failed when this param was unset

defaults/main.yml

@@ -595,6 +595,7 @@ _nexus_repos_nuget_defaults:
   maximum_metadata_age: 1440  # Nexus gui default. For proxies only
   negative_cache_enabled: true  # Nexus gui default. For proxies only
   negative_cache_ttl: 1440  # Nexus gui default. For proxies only
+  nuget_version: v3  # Nexus gui default. For proxies only. One of v2 or v3
 
 nexus_repos_nuget_hosted:
   - name: nuget-internal

molecule/nexus_common_test_vars.yml

@@ -247,10 +247,24 @@ nexus_repos_go_proxy:
   - name: go-proxy
     remote_url: 'https://golang.org/pkg/'
 
+nexus_repos_nuget_hosted:
+  - name: nuget-internal
+    blob_store: "{{ nexus_blob_names.nuget.blob }}"
+
+nexus_repos_nuget_group:
+  - name: nuget-all
+    blob_store: "{{ nexus_blob_names.nuget.blob }}"
+    member_repos:
+      - nuget-internal
+      - nuget-proxy
+
 nexus_repos_nuget_proxy:
-  - name: test-nuget-proxy
+  - name: nuget-proxy-with-version
+    blob_store: "{{ nexus_blob_names.nuget.blob }}"
+    remote_url: http://www.nuget.org/api/v2
+    nuget_version: v2
+  - name: nuget-proxy-default
     remote_url: https://api.nuget.org/v3/index.json
-    nuget_version: v3
 
 nexus_content_selectors:
   # Docker by namespace. For mode details see: