provide a minimal nexus-staging maven plugin deployment option

Requirements:

• given a multi-module build of 100s of modules
• given only one staging profile is needed for all the modules and the id can be explicitly provided
• given supporting maven multi-threaded build is required
  at start of reactor open a single staging repo using the specified staging profile id
• skipLocalStaging is used to deploy at each module end deploy phase to the staging repo, thereby indirectly creating a parallel deployment to the same staging repo
• if any one module fails, stop reactor and drop the opened staging repo
• if all modules succeed, close the single staging repo at end of reactor

This scenario is only needed for Maven 3. Maven 2 compatibility is not required.