spring-atticGH-3: Use messages as a default table name

Fixes: spring-atticGH-3 (spring-attic#3)

Author: artembilan

spring-cloud-starter-stream-sink-jdbc/README.adoc

@@ -11,7 +11,7 @@ The **$$jdbc$$** $$sink$$ has the following options:
 $$jdbc.columns$$:: $$The names of the columns that shall receive data, as a set of column[:SpEL] mappings.
  Also used at initialization time to issue the DDL.$$ *($$java.util.Map<java.lang.String,java.lang.String>$$, default: `$$<none>$$`)*
 $$jdbc.initialize$$:: $$'true', 'false' or the location of a custom initialization script for the table.$$ *($$String$$, default: `$$false$$`)*
-$$jdbc.table-name$$:: $$The name of the table to write into.$$ *($$String$$, default: `$$<none>$$`)*
+$$jdbc.table-name$$:: $$The name of the table to write into.$$ *($$String$$, default: `$$messages$$`)*
 $$spring.datasource.driver-class-name$$:: $$Fully qualified name of the JDBC driver. Auto-detected based on the URL by default$$ *($$String$$, default: `$$<none>$$`)*
 $$spring.datasource.schema$$:: $$Schema (DDL) script resource reference$$ *($$String$$, default: `$$<none>$$`)*
 $$spring.datasource.data$$:: $$Data (DML) script resource reference.$$ *($$String$$, default: `$$<none>$$`)*

spring-cloud-starter-stream-sink-jdbc/src/main/java/org/springframework/cloud/stream/app/jdbc/sink/JdbcSinkProperties.java

@@ -19,7 +19,6 @@
 import java.util.Collections;
 import java.util.Map;
 
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 
 /**
@@ -33,8 +32,7 @@ public class JdbcSinkProperties {
 	/**
 	 * The name of the table to write into.
 	 */
-	@Value("${spring.application.name:messages}")
-	private String tableName;
+	private String tableName = "messages";
 
 	/**
 	 * The names of the columns that shall receive data, as a set of column[:SpEL] mappings.