Better OpenAPI spec v3 support: allOf, anyOf, oneOf (#1360)

* add oneOf support to Ruby

* add anyOf support to ruby client

* add discriminator support to ruby client

* fix typo

* update samples, fix NPE

* better format in ruby generator

* fix test cases, disable mapping test

* fix update script, update samples

* add test, fix mapping

* update exit code

* reenabled discriminator test

* remove duplicated properties

* add test for duplicated properties

* update samples, add new spec

* fix ruby test cases

* fix hasMore after removing duplicates

* refactor method, comment out haskell client test

* fix hasMore and update samples

* fix parent detection

* fix discriminator check

* [haskell-http-client] need to use {{vars}}{{required}} instead of {{requiredVars}}

* remove deprecated methods in default codegen (#1031)

* regenerate samples

* remove commented code

samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools/Model/EnumTest.cs

@@ -140,11 +140,6 @@ namespace Org.OpenAPITools.Model
         [DataMember(Name="enum_number", EmitDefaultValue=false)]
         public EnumNumberEnum? EnumNumber { get; set; }
         /// <summary>
-        /// Gets or Sets OuterEnum
-        /// </summary>
-        [DataMember(Name="outerEnum", EmitDefaultValue=false)]
-        public OuterEnum? OuterEnum { get; set; }
-        /// <summary>
         /// Initializes a new instance of the <see cref="EnumTest" /> class.
         /// </summary>
         [JsonConstructorAttribute]
@@ -157,7 +152,7 @@ namespace Org.OpenAPITools.Model
         /// <param name="enumInteger">enumInteger.</param>
         /// <param name="enumNumber">enumNumber.</param>
         /// <param name="outerEnum">outerEnum.</param>
-        public EnumTest(EnumStringEnum? enumString = default(EnumStringEnum?), EnumStringRequiredEnum enumStringRequired = default(EnumStringRequiredEnum), EnumIntegerEnum? enumInteger = default(EnumIntegerEnum?), EnumNumberEnum? enumNumber = default(EnumNumberEnum?), OuterEnum? outerEnum = default(OuterEnum?))
+        public EnumTest(EnumStringEnum? enumString = default(EnumStringEnum?), EnumStringRequiredEnum enumStringRequired = default(EnumStringRequiredEnum), EnumIntegerEnum? enumInteger = default(EnumIntegerEnum?), EnumNumberEnum? enumNumber = default(EnumNumberEnum?), OuterEnum outerEnum = default(OuterEnum))
         {
             // to ensure "enumStringRequired" is required (not null)
             if (enumStringRequired == null)
@@ -178,6 +173,11 @@ namespace Org.OpenAPITools.Model
 
 
 
+        /// <summary>
+        /// Gets or Sets OuterEnum
+        /// </summary>
+        [DataMember(Name="outerEnum", EmitDefaultValue=false)]
+        public OuterEnum OuterEnum { get; set; }
 
         /// <summary>
         /// Returns the string presentation of the object