TRQ-2956 Torque HOST_NAME_SUFFIX no longer adding suffix to job names

When req_quejob was refactored the function get_job_id removed some
logic where resolving the host name called get_fullhostname. At
first glance this if else clause looked redundant. However, the
get_fullhostname takes care of the HOST_NAME_SUFFIX option.
Revert "TRQ-2956 Torque HOST_NAME_SUFFIX no longer adding suffix to job names"

This reverts commit 8910cb738a74ef156f699fbbb580ae74884535dd.
Merge branch 'master' into feature/bursting (run by Brad Daw)