fix(core): Modify HTTP client on first API call

Author: lpatino10

core/src/main/java/com/ibm/watson/developer_cloud/http/HttpClientSingleton.java

@@ -226,17 +226,18 @@ public OkHttpClient createHttpClient() {
    * Configures the current {@link OkHttpClient} instance based on the passed-in options.
    *
    * @param options the {@link HttpConfigOptions} object for modifying the client
+   * @return the client
    */
-  public void configureClient(HttpConfigOptions options) {
-    if (options == null) {
-      return;
+  public OkHttpClient configureClient(HttpConfigOptions options) {
+    if (options != null) {
+      if (options.shouldDisableSslVerification()) {
+        disableSslVerification();
+      }
+      if (options.getProxy() != null) {
+        setProxy(options.getProxy());
+      }
     }
 
-    if (options.shouldDisableSslVerification()) {
-      disableSslVerification();
-    }
-    if (options.getProxy() != null) {
-      setProxy(options.getProxy());
-    }
+    return okHttpClient;
   }
 }

core/src/main/java/com/ibm/watson/developer_cloud/service/WatsonService.java

@@ -167,12 +167,12 @@ protected OkHttpClient configureHttpClient() {
   }
 
   /**
-   * Configures the inner HTML client based on the passed-in options.
+   * Configures the {@link OkHttpClient} based on the passed-in options.
    *
    * @param options the {@link HttpConfigOptions} object for modifying the client
    */
   public void configureClient(HttpConfigOptions options) {
-    HttpClientSingleton.getInstance().configureClient(options);
+    client = HttpClientSingleton.getInstance().configureClient(options);
   }
 
   /**