Unescape credentials on URI before adding basic auth header (ty @Tasteful)

Author: gmarz

src/Elasticsearch.Net/Connection/HttpConnection.cs

@@ -171,8 +171,8 @@ private void SetBasicAuthorizationIfNeeded(Uri uri, HttpWebRequest request, IReq
  			// 2 - Specified at the global IConnectionSettings level
 			// 3 - Specified with the URI (lowest precedence)
 
-			var userInfo = uri.UserInfo;
-			
+			var userInfo = Uri.UnescapeDataString(uri.UserInfo);
+
 			if (this.ConnectionSettings.BasicAuthorizationCredentials != null)
 				userInfo = this.ConnectionSettings.BasicAuthorizationCredentials.ToString();
 

src/Tests/Nest.Tests.Integration/Connection/Security/BasicAuthorizationTests.cs

@@ -60,6 +60,15 @@ public void Credentials_On_URI_Result_In_200()
 			response.IsValid.Should().BeTrue();
 		}
 
+		[Test]
+		public void Escaped_Credentials_On_URI_Result_In_200()
+		{
+			var settings = new ConnectionSettings(new Uri("http://gmarz:p%40ssword@localhost:9200"));
+			var client = new ElasticClient(settings);
+			var response = client.RootNodeInfo();
+			response.IsValid.Should().BeTrue();
+		}
+
 		[Test]
 		public void ConnectionSettings_Overrides_URI()
 		{