Bugfix to make the workflow identity used by the Percolator be less prone to clash. It is now based on the host anme and absolute path to the YAML config file.
Ensure that LSB_DEFAULTQUEUE is restored after testing
Bumped version
Merge remote branch 'wtsi-npg/devel' into devel

Conflicts:
	lib/percolate/version.rb
Merge pull request #14 from keithj/devel

Bugfix to eliminate clashes in workflow identities