Add an in-progress key to tasks

For tasks with an in-progress key, add and evaluate an inProgress
attribute. This is useful to help prevent multiple instances of a CI
system from running at the same time.

Change-Id: Ib475932671b386bac705b382579bc902c0fc7990
5 files changed
tree: dbae7088a83ea0952aa21c4bc74ad5af76bab13f
  1. src/
  2. test/
  3. .gitignore
  4. pom.xml