upgrade httpclient from 4.5 to 4.5.3

this comes from com.att.nsa.cambriaClient

Change-Id: Ib451837526fd6de2a411c530fd3131a26d36473a
Issue-ID: APPC-711
Signed-off-by: Taka Cho <tc012c@att.com>
diff --git a/appc-client/client-lib/pom.xml b/appc-client/client-lib/pom.xml
index ad86c0b..362e2b7 100644
--- a/appc-client/client-lib/pom.xml
+++ b/appc-client/client-lib/pom.xml
@@ -54,6 +54,17 @@
         <dependency>

                 <groupId>com.att.nsa</groupId>

                 <artifactId>cambriaClient</artifactId>

+                <exclusions>

+                      <exclusion>

+                           <artifactId>httpclient</artifactId>

+                           <groupId>org.apache.httpcomponents</groupId>

+                      </exclusion>

+                 </exclusions>

+        </dependency>

+        <dependency>

+                 <groupId>org.apache.httpcomponents</groupId>

+                 <artifactId>httpclient</artifactId>

+                 <version>4.5.3</version>

         </dependency>

         <dependency>

             <groupId>com.att.eelf</groupId>