HADOOP-16076. SPNEGO+SSL Client Connections with HttpClient Broken.

Contributed by Larry McCay

hadoop-project/pom.xml

@@ -72,8 +72,8 @@
     <jackson2.version>2.9.8</jackson2.version>
 
     <!-- httpcomponents versions -->
-    <httpclient.version>4.5.2</httpclient.version>
-    <httpcore.version>4.4.4</httpcore.version>
+    <httpclient.version>4.5.6</httpclient.version>
+    <httpcore.version>4.4.10</httpcore.version>
 
     <!-- SLF4J version -->
     <slf4j.version>1.7.25</slf4j.version>