Fixed compile warnings

```
/Users/pperalta/src/github/spring-xd/spring-xd-dirt/src/main/java/org/springframework/xd/dirt/util/XdConfigLoggingInitializer.java:101: warning: [rawtypes] found raw type: EnumerablePropertySource
				EnumerablePropertySource eps = (EnumerablePropertySource) ps;
				^
  missing type arguments for generic class EnumerablePropertySource<T>
  where T is a type-variable:
    T extends Object declared in class EnumerablePropertySource
3 warnings
```

```
/Users/pperalta/src/github/spring-xd/extensions/spring-xd-extension-reactor/src/main/java/org/springframework/xd/integration/reactor/syslog/SyslogInboundChannelAdapter.java:57: warning: [rawtypes] found raw type: NetServer
	private volatile NetServer server;
	                 ^
  missing type arguments for generic class NetServer<IN,OUT>
  where IN,OUT are type-variables:
    IN extends Object declared in interface NetServer
    OUT extends Object declared in interface NetServer
/Users/pperalta/src/github/spring-xd/extensions/spring-xd-extension-reactor/src/main/java/org/springframework/xd/integration/reactor/syslog/SyslogInboundChannelAdapter.java:108: warning: [rawtypes] found raw type: NetServer
		NetServerSpec<Buffer, Buffer, ? extends NetServerSpec<Buffer, Buffer, ?, ?>, ? extends NetServer> spec;
		                                                                                       ^
  missing type arguments for generic class NetServer<IN,OUT>
  where IN,OUT are type-variables:
    IN extends Object declared in interface NetServer
    OUT extends Object declared in interface NetServer
3 warnings
```