Rebase onto sourceddl branch with resolved comments

Author: Deep1998

v2/spanner-to-sourcedb/src/main/java/com/google/cloud/teleport/v2/templates/SpannerToSourceDb.java

@@ -47,8 +47,8 @@
 import com.google.cloud.teleport.v2.spanner.migrations.utils.ShardFileReader;
 import com.google.cloud.teleport.v2.spanner.sourceddl.CassandraInformationSchemaScanner;
 import com.google.cloud.teleport.v2.spanner.sourceddl.MySqlInformationSchemaScanner;
-import com.google.cloud.teleport.v2.spanner.sourceddl.SourceInformationSchemaScanner;
 import com.google.cloud.teleport.v2.spanner.sourceddl.SourceSchema;
+import com.google.cloud.teleport.v2.spanner.sourceddl.SourceSchemaScanner;
 import com.google.cloud.teleport.v2.templates.SpannerToSourceDb.Options;
 import com.google.cloud.teleport.v2.templates.changestream.TrimmedShardedDataChangeRecord;
 import com.google.cloud.teleport.v2.templates.constants.Constants;
@@ -563,7 +563,7 @@ public static PipelineResult run(Options options) {
       LOG.info("Cassandra config is: {}", shards.get(0));
       shardingMode = Constants.SHARDING_MODE_SINGLE_SHARD;
     }
-    SourceInformationSchemaScanner scanner = null;
+    SourceSchemaScanner scanner = null;
     SourceSchema sourceSchema = null;
     try {
       if (options.getSourceType().equals(MYSQL_SOURCE_TYPE)) {