Bug actiongroup version list includes subprojects

When building the list of versions for bug group actions update fixed
in / target version, use print_version_option_list() with the flag to
retrieve versions from sub-projects.

Prior to this, whenever the group action affected bugs from more than
one project, the versions list would always be built for ALL_PROJECTS
(i.e. an empty list since there is no concept of global versions)

Fixes 0013662