Add temporary dependency management for reactor-netty

The version of reactor-netty currently provided by reactor-bom is
incompatible with the version of reactor-core that's provided. To
work around this problem, this commit adds dependency management for
reactor-netty that overrides the bom.

spring-boot-dependencies/pom.xml

@@ -143,6 +143,7 @@
 		<postgresql.version>9.4.1212.jre7</postgresql.version>
 		<querydsl.version>4.1.4</querydsl.version>
 		<reactor-bom.version>Aluminium-BUILD-SNAPSHOT</reactor-bom.version>
+		<reactor-netty.version>0.6.3.BUILD-SNAPSHOT</reactor-netty.version>
 		<rxjava.version>1.2.9</rxjava.version>
 		<rxjava-adapter.version>1.2.1</rxjava-adapter.version>
 		<rxjava2.version>2.0.7</rxjava2.version>
@@ -902,6 +903,11 @@
 				<artifactId>netty-resolver-dns</artifactId>
 				<version>${netty.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>io.projectreactor.ipc</groupId>
+				<artifactId>reactor-netty</artifactId>
+				<version>${reactor-netty.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>io.projectreactor</groupId>
 				<artifactId>reactor-bom</artifactId>