Merge pull request #47 from keizer619/jdk11

Update stage and dev central urls

src/main/java/org/ballerinalang/command/util/ToolUtil.java

@@ -56,15 +56,15 @@
  */
 public class ToolUtil {
     private static final String PRODUCTION_URL = "https://api.central.ballerina.io/1.0/update-tool";
-    private static final String STAGING_URL = "https://api.staging-central.ballerina.io/update-tool";
-    private static final String PREPROD_URL = "https://api.preprod-central.ballerina.io/1.0/update-tool";
+    private static final String STAGING_URL = "https://api.staging-central.ballerina.io/1.0/update-tool/";
+    private static final String DEV_URL = "https://api.dev-central.ballerina.io/1.0/update-tool/";
     public static final String CLI_HELP_FILE_PREFIX = "dist-";
     private static final String BALLERINA_1_X_VERSIONS = "1.0.";
     private static final String CONNECTION_ERROR_MESSAGE = "connection to the remote server failed";
-    public static final boolean BALLERINA_DEV_STAGE_UPDATE = Boolean.parseBoolean(
-            System.getenv("BALLERINA_DEV_STAGE_UPDATE"));
-    public static final boolean BALLERINA_DEV_PREPROD_UPDATE = Boolean.parseBoolean(
-            System.getenv("BALLERINA_DEV_PREPROD_UPDATE"));
+    public static final boolean BALLERINA_STAGING_UPDATE = Boolean.parseBoolean(
+            System.getenv("BALLERINA_STAGING_UPDATE"));
+    public static final boolean BALLERINA_DEV_UPDATE = Boolean.parseBoolean(
+            System.getenv("BALLERINA_DEV_UPDATE"));
 
     private static TrustManager[] trustAllCerts = new TrustManager[]{
             new X509TrustManager() {
@@ -772,8 +772,8 @@ private static String getServerRequestFailedErrorMessage(HttpURLConnection conn)
      */
     private static String getServerURL() {
         String url = PRODUCTION_URL;
-        url = BALLERINA_DEV_STAGE_UPDATE ? STAGING_URL : url;
-        url = BALLERINA_DEV_PREPROD_UPDATE ? PREPROD_URL : url;
+        url = BALLERINA_STAGING_UPDATE ? STAGING_URL : url;
+        url = BALLERINA_DEV_UPDATE ? DEV_URL : url;
         return url;
     }