VEP: avoid conflicts with new `--most_severe` option
VEP: avoid conflicts with new `--most_severe` option

Moves large number of arguments that conflict with `--most_severe`
(https://useast.ensembl.org/info/docs/tools/vep/script/vep_options.html#opt_most_severe)
Fixes #2813

lbeltrame/bcbio-nextgen,chapmanb/bcbio-nextgen,chapmanb/bcbio-nextgen,chapmanb/bcbio-nextgen,a113n/bcbio-nextgen,vladsaveliev/bcbio-nextgen,a113n/bcbio-nextgen,a113n/bcbio-nextgen,lbeltrame/bcbio-nextgen,lbeltrame/bcbio-nextgen,vladsaveliev/bcbio-nextgen,vladsaveliev/bcbio-nextgen