Corrected pims_split templates

Daniel Nemergutrequested to merge
htc10_wf_template_fixes into 2.8.3-DEVELOPMENT

Fixed split.condor for HTC10 by removing the quotes around an already quoted variable. I didn't find any other instances of this happening in other template files.

Also brought over update_stage commands into split.sh that disappeared sometime since 2.8.1.

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