Updating twitter streaming sample to include default values for hostname and port

Author: Rahul Ajmera

samples/features/sql-big-data-cluster/spark/data-loading/spark-twitter-streaming-sample.ipynb

@@ -24,7 +24,7 @@
                 "## **Steps**\r\n",
                 "1. [Create a Twitter Developer Account](https://developer.twitter.com/en/apply-for-access.html).\r\n",
                 "2. Setup\r\n",
-                "    1. Create 'TwitterData' database.\r\n",
+                "    1. Create 'TwitterData' database and retrieve server hostname.\r\n",
                 "    2. Change kernel from \"SQL\" to \"Spark | Scala\".\r\n",
                 "    3. Import packages.\r\n",
                 "    4. Enter required parameters.\r\n",
@@ -53,7 +53,7 @@
             "cell_type": "markdown",
             "source": [
                 "## **2. Setup**\n",
-                "1. Create a database in the SQL Server master instance called 'TwitterData'.\n",
+                "1. Create a database in the SQL Server master instance called 'TwitterData', and retrieve server hostname. \n",
                 "2. Change the Kernel from \"SQL\" to \"Spark | Scala\".\n",
                 "3. Import Java packages.\n",
                 "4. Specify setup parameters"
@@ -65,7 +65,7 @@
         {
             "cell_type": "markdown",
             "source": [
-                "### **2.1 Create TwitterData Database**"
+                "### **2.1 Create TwitterData Database and Retrieve Hostname**"
             ],
             "metadata": {
                 "azdata_cell_guid": "196dd8cd-e4d7-45c7-b6f8-21dde6c75ae7"