Read data-{platform}.sql in addition to data.sql

Update DataSourceAutoConfiguration to read platform specific `data.sql`
files in the same way as `schema.sql` files.

Fixes gh-837

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jdbc/DataSourceAutoConfiguration.java

@@ -96,9 +96,11 @@ public class DataSourceAutoConfiguration implements EnvironmentAware {
 
 		String schema = this.datasourceProperties.getProperty("schema");
 		if (schema == null) {
-			schema = "classpath*:schema-"
-					+ this.datasourceProperties.getProperty("platform", "all")
-					+ ".sql,classpath*:schema.sql,classpath*:data.sql";
+			String platform = this.datasourceProperties.getProperty("platform", "all");
+			schema = "classpath*:schema-" + platform + ".sql,";
+			schema += "classpath*:schema.sql,";
+			schema += "classpath*:data-" + platform + ".sql,";
+			schema += "classpath*:data.sql";
 		}
 
 		List<Resource> resources = new ArrayList<Resource>();

spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -1062,7 +1062,8 @@ not something you want to be on the classpath in production. It is a Hibernate f
 === Initialize a database using Spring JDBC
 Spring JDBC has a `DataSource` initializer feature. Spring Boot enables it by default and
 loads SQL from the standard locations `schema.sql` and `data.sql` (in the root of the
-classpath). In addition Spring Boot will load a file `schema-${platform}.sql` where
+classpath). In addition Spring Boot will load the `schema-${platform}.sql`
+and `data-${platform}.sql` files (if present), where
 `platform` is the value of `spring.datasource.platform`, e.g. you might choose to set
 it to the vendor name of the database (`hsqldb`, `h2`, `oracle`, `mysql`,
 `postgresql` etc.). Spring Boot enables the failfast feature of the Spring JDBC