Due to changes in the m2e Eclipse plugin for Indigo (3.7), plugin
execution no longer happens directly, but rather must be configured
through m2e's lifecycle-mapping plugin.
In order for a plugin to be invoked within Eclipse, a pluginExecution
must be defined in the lifecycle-mapping plugin corresponding to the
execution tag in the plugin definition itself.
To achieve this, a new section is added in the build section of the
POM files.
See http://goo.gl/2WCNW for details.
Change-Id: Id37cd53bea434cb9ecf8f509de8da558516e8303