Add entries for Generic cloud and datawarehouse databases.

This patch adds entries for Generic database entries for cloud
and data warehouse databases. This is solely for convenience
for people using the web server as a convenient frontend for
SQL database.

Conventional RDBMS databases moved into the cloud:

 - Azure SQL (Microsoft, based on SQL Server)
 - Redshift (Amazon, based on PostgreSQL 8)

(Note: Redshift can also use a PostgreSQL driver but the
Redshift driver has significantly better performance.)

Cloud-native databases:

 - Hive 1
 - Hive 2

(Note: hive may be run on a vanilla Hadoop cluster, a Cloudera
cluster, or a Hortonworks cluster. The last two products may
offer custom JDBC drivers.)

(Note: this patch does not address Kerberos authentication
or SSL encryption.)

Data warehouse databases:

 - Impala
 - Snowflake
 - Teradata

Impala is part of the Hadoop ecosystem and provided by Cloudera.
Snowflake and Teradata are both commercial products.

h2/src/main/org/h2/server/web/WebServer.java

@@ -76,6 +76,20 @@ public class WebServer implements Service {
     private static final String[] GENERIC = {
         "Generic JNDI Data Source|javax.naming.InitialContext|" +
                 "java:comp/env/jdbc/Test|sa",
+        "Generic Teradata|com.teradata.jdbc.TeraDriver|" +
+                "jdbc:teradata://whomooz/|",
+        "Generic Snowflake|com.snowflake.client.jdbc.SnowflakeDriver|" +
+                "jdbc:snowflake://accountName.snowflakecomputing.com|",
+        "Generic Redshift|com.amazon.redshift.jdbc42.Driver|" +
+                "jdbc:redshift://endpoint:5439/database|",
+        "Generic Impala|org.cloudera.impala.jdbc41.Driver|" +
+                "jdbc:impala://clustername:21050/default|",
+        "Generic Hive 2|org.apache.hive.jdbc.HiveDriver|" +
+                "jdbc:hive2://clustername:10000/default|",
+        "Generic Hive|org.apache.hadoop.hive.jdbc.HiveDriver|" +
+                "jdbc:hive://clustername:10000/default|",
+        "Generic Azure SQL|com.microsoft.sqlserver.jdbc.SQLServerDriver|" +
+                "jdbc:sqlserver://name.database.windows.net:1433|",
         "Generic Firebird Server|org.firebirdsql.jdbc.FBDriver|" +
                 "jdbc:firebirdsql:localhost:c:/temp/firebird/test|sysdba",
         "Generic SQLite|org.sqlite.JDBC|" +