Upgraded hbase to 1.9.0 (#311)

- Updated bigtable-hbase-1.x to 1.9.0.
- Added more formatted terminal comments.
- Standardized projectID argument for Integration Test.

bigtable/hbase/snippets/src/main/java/com/example/cloud/bigtable/quickstart/Quickstart.java

@@ -44,20 +44,25 @@ public static void main(String... args) {
     // Use try-with-resources to make sure the connection is closed correctly
     try (Connection connection = BigtableConfiguration.connect(projectId, instanceId)) {
 
+      System.out.println("--- Connection established with Bigtable Instance ---");
       // Create a connection to the table that already exists
       // Use try-with-resources to make sure the connection to the table is closed correctly
       try (Table table = connection.getTable(TableName.valueOf(tableId))) {
 
         // Read a row
         String rowKey = "r1";
+        System.out.printf("--- Reading for row-key: %s for provided table: %s ---\n",
+            rowKey, tableId);
 
         // Retrieve the result
         Result result = table.get(new Get(Bytes.toBytes(rowKey)));
 
         // Convert row data to string
         String rowValue = Bytes.toString(result.value());
 
-        System.out.printf("Row r1: %s", rowValue);
+        System.out.printf("Scanned value for Row r1: %s \n", rowValue);
+
+        System.out.println(" --- Finished reading row --- ");
 
       }  catch (IOException e) {
         // handle exception while connecting to a table

bigtable/hbase/snippets/src/test/java/com/example/cloud/bigtable/quickstart/it/QuickstartIT.java

@@ -45,14 +45,15 @@
 @SuppressWarnings("checkstyle:abbreviationaswordinname")
 public class QuickstartIT {
 
-  private final String instanceId = System.getProperty("bigtable.test.instance");
+  // provide your project id as an env var
+  private final String projectId = System.getProperty("bigtable.test.projectID");
+  private final String instanceId = System.getProperty("bigtable.test.instanceID");
+
   private final String tableId = formatForTest("my-table");
   private final String columnFamilyName = "my-column-family";
   private final String columnName = "my-column";
   private final String data = "my-data";
 
-  // provide your project id as an env var
-  private final String projectId = System.getenv("GOOGLE_CLOUD_PROJECT");
 
   private String formatForTest(String name) {
     return name + "-" + UUID.randomUUID().toString().substring(0, 20);