Revert "RANGER-5397: IllegalArgumentException in RangerRESTClient when no ran…" (#778)

This reverts commit 464bfd9.

Author: pradeepagrawal8184

agents-common/src/main/java/org/apache/ranger/plugin/util/RangerRESTClient.java

@@ -110,11 +110,9 @@ public RangerRESTClient(String url, String sslConfigFileName, Configuration conf
         mUrl               = url;
         mSslConfigFileName = sslConfigFileName;
         configuredURLs     = StringUtil.getURLs(mUrl);
-        if (StringUtil.isEmpty(url)) {
-            throw new IllegalArgumentException("Ranger URL is null or empty. Likely caused by incorrect configuration");
-        } else {
-            setLastKnownActiveUrlIndex((new Random()).nextInt(getConfiguredURLs().size()));
-        }
+
+        setLastKnownActiveUrlIndex((new Random()).nextInt(getConfiguredURLs().size()));
+
         init(config);
     }