extend test for running mark_duplicates command on non-consented bam file
do not explicitly set non_consent_split when splitting by chromosome
command before tee MUST write to stdout
fix markduplicates tests
Merge pull request #7 from wtsi-npg/master

Pull request from wtsi-npg master to devel (release 49.1)
Merge pull request #4 from srl147/devel

extend test for running mark_duplicates command on non-consented bam fil...
Merge pull request #6 from srl147/fix_tee

Fix tee
detail bugfix in bam_alignment and bam_markduplicate wrappers