Putting back vars for sed string replace

Author: hdulay

azure-sqldw-sink-connector/azure.sqldw.json

@@ -2,10 +2,10 @@
 	"name": "azure-sqldw-sink",
 	"connector.class": "io.confluent.connect.azuresqldw.AzureSqlDwSinkConnector",
 	"topics":"clickstream",
-	"azure.sql.dw.url": "jdbc:sqlserver://hubert-sql-server.database.windows.net:1433;",
-	"azure.sql.dw.user": "hubert",
-	"azure.sql.dw.password": "confluent10!",
-	"azure.sql.dw.database.name": "quickstartDataWarehouse",
+	"azure.sql.dw.url": "jdbc:sqlserver://_SERVER_.database.windows.net:1433;",
+	"azure.sql.dw.user": "_ADMIN_USER_",
+	"azure.sql.dw.password": "_ADMIN_PASS_",
+	"azure.sql.dw.database.name": "_DWNAME_",
 	"table.name.format": "kafka_${topic}",
 	"auto.create": true,
 	"auto.evolve": true,