samtools check updated to work in Batch mode

[slacalle]

"samtools view" will fail in non interactive shells.

[slacalle]

When running in a batch job (from a conda environment), i.e.

ssh [server] bash -c "unset DISPLAY; unset TERM; $HOME/bin/samtools view > log 2>&1"

this will return:

[main_samview] fail to read the header from "-"

May very well be an issue with the bioconda recipe, and suggests this is only compatible with samtools < 1.10