fixes #6335 - permit only --hostgroup when creating host
ref #6203 - creating a more generic hook for search_options, BZ1108905
Merge pull request #131 from komidore64/rmi6203-repo-scoped-to-product

ref #6203 - creating a more generic hook for search_options, BZ1108905
fixes #6478 - obey refresh_cache default of false
Merge pull request #133 from domcleal/6478-refresh-cache-ignored

fixes #6478 - obey refresh_cache default of false
Merge pull request #130 from domcleal/6343-nested-resolver

#6335  - host creation improvements
Fixes #2922 and #4004 - commands for managing roles, filters, permissions and usergroups
Refs #2922 - tests updated to use apidoc export for v1.6