Fix #1429: Add missing doc_values to date, bool, and geo point mappings

Author: gmarz

src/Nest/Domain/Mapping/Descriptors/BooleanMappingDescriptor.cs

@@ -84,5 +84,11 @@ public BooleanMappingDescriptor<T> Fields(Func<CorePropertiesDescriptor<T>, Core
 			}
 			return this;
 		}
+
+		public BooleanMappingDescriptor<T> DocValues(bool docValues = true)
+		{
+			this._Mapping.DocValues = docValues;
+			return this;
+		}
 	}
 }

src/Nest/Domain/Mapping/Descriptors/DateMappingDescriptor.cs

@@ -88,5 +88,11 @@ public DateMappingDescriptor<T> Fields(Func<CorePropertiesDescriptor<T>, CorePro
 			}
 			return this;
 		}
+
+		public DateMappingDescriptor<T> DocValues(bool docValues = true)
+		{
+			this._Mapping.DocValues = docValues;
+			return this;
+		}
 	}
 }

src/Nest/Domain/Mapping/Descriptors/GeoPointMappingDescriptor.cs

@@ -55,5 +55,11 @@ public GeoPointMappingDescriptor<T> FieldData(FieldDataNonStringMapping fieldDat
 			this._Mapping.FieldData = fieldData;
 			return this;
 		}
+
+		public GeoPointMappingDescriptor<T> DocValues(bool docValues = true)
+		{
+			this._Mapping.DocValues = docValues;
+			return this;
+		}
 	}
 }

src/Nest/Domain/Mapping/Types/BooleanMapping.cs

@@ -32,5 +32,8 @@ public BooleanMapping():base("boolean")
 
 		[JsonProperty("copy_to")]
 		public IEnumerable<PropertyPathMarker> CopyTo { get; set; }
+
+		[JsonProperty("doc_values")]
+		public bool? DocValues { get; set; }
 	}
 }

src/Nest/Domain/Mapping/Types/DateMapping.cs

@@ -39,5 +39,7 @@ public DateMapping():base("date")
 		[JsonProperty("ignore_malformed")]
 		public bool? IgnoreMalformed { get; set; }
 
+		[JsonProperty("doc_values")]
+		public bool? DocValues { get; set; }
 	}
 }

src/Nest/Domain/Mapping/Types/GeoPointMapping.cs

@@ -29,5 +29,8 @@ public class GeoPointMapping : IElasticType
 
 		[JsonProperty("fielddata")]
 		public FieldDataNonStringMapping FieldData { get; set; }
+
+		[JsonProperty("doc_values")]
+		public bool? DocValues { get; set; }
 	}
 }