runtime: enhance groovy dsl

[lburgazzoli]

I've working to improve the groovy dsl here and I may contribute to camel later on to fix CAMEL-12845.

An examples:

component('seda') {
    // set value as method
    queueSize 1234

    // set value as property
    concurrentConsumers = 12
}

component('log') {
    // injected in LogComponent using
    // groovy's extension module
    formatter {
        'body ==> ' + in.body
    }
}

registry {
    bind 'myEntry1', 'myRegistryEntry1'
    bind 'myEntry2', 'myRegistryEntry2'
}

restConfiguration {
    host 'my-host'
    port '9192'
}

restConfiguration('undertow') {
    host 'my-undertow-host'
    port '9193'
}


from('timer:tick')
    .to('log:info')

IMPORTANT: I've re-wrote this artifact in groovy as it makes it easy to write a proper DSL.

[asfgit]

Refer to this link for build results (access rights to CI server needed):
https://builds.apache.org/job/Camel-k-pr/7/