Add support for parameterized trigger as build step.
Adding support for NodeParameters and BooleanParameters for parameterized trigger.
Moving trigger parameters into their own method, reconciling it with multijob plugin usage
Merge pull request #126 from abayer/parameterized-trigger

Add support for parameterized trigger as build step.
Move all *Context classes from being static/inner classes

Also moved anything with a sub-context into a separate package.

Note that I briefly had all the beans within contexts moved to
separate classes too, but then realized that was unneeded. That
probably left some artifacts of the temporary change around in terms
of the diff, with classes moved around some.
Cleanup whitespace, imports.
Merge pull request #129 from abayer/resolvestrategy

Move all *Context classes from being static/inner classes
added support for Build Pipeline plugin