Add simple method to check if image was imported prior to FS
set the compression to high for big images (see #10759)
Fix find_user() method to deal with ambiguous groups

Add error_ambiguous_user() method
Improve user arguments allowing to specify input type (id or name)

Refactor list_users() methods to call find_user(), find_user_by_id() and/or
find_user_by_name() depending on the input.
Fix double whitespace
Merge pull request #1079 from jburel/fs-image

Add simple method to check if image was imported prior to FS
Merge pull request #1086 from jburel/rebased/develop/big-image-compression

set the compression to high for big images (see #10759) (rebased onto develop)
travis: Install python-genshi
Merge pull request #1094 from rleigh-dundee/travis-genshi

travis: Install python-genshi
Merge pull request #1088 from sbesson/rebased/develop/cli_finduser

CLI: Improve user arguments allowing to specify input type (rebased onto develop)
Update TestNG in blitz to 6.8
Move TestNG dep to dsl