Upgrade Maven Install plugin to version 2.5.1

** Bug 
     * [MINSTALL-98] - installAtEnd broken with parallel builds 
     * [MINSTALL-99] - InstallAtEnd should respect plugin-configuration per project 

** Bug
     * [MINSTALL-92] - Docs says the skip param is required, which it isn't

** Improvement
     * [MINSTALL-39] - Maven Install Plugin always copy the artifact in the repository, even if there was no changes
     * [MINSTALL-90] - use last plexus-utils 3.0.7 which is faster on  copying files.
     * [MINSTALL-95] - Enhance documentation of install-file

** New Feature
     * [MINSTALL-52] - install:install-file should default to a pom file  found in the jar if available
     * [MINSTALL-93] - Add installAtEnd option for multimodule projects