Fix build

Fix compilation error and project parent pom properties
No, it is necessary since compile can't determine type

```
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project chef-basics: Compilation failure
[ERROR] /Users/kupal/workspace/third-party/jclouds-examples/chef-basics/src/main/java/org/apache/jclouds/examples/chef/basics/MainApp.java:[321,48] type parameters of <C>C cannot be determined; no unique maximal instance exists for type variable C with upper bounds org.jclouds.chef.ChefContext,org.jclouds.Context
```

I'll add a space, sure