Created attachment 926022 [details]
UI doesn't allow to delete/edit the hostgroup having singe whitespace in name

Description of problem:
I was trying to create hostgroup with single white space in quotes (" ")and it was created successfully. But when I tried to edit or delete it, UI says:

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Host Group Not Found

Please try to update your request
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Version-Release number of selected component (if applicable):
sat6 GA snap4

How reproducible:
always

Steps to Reproduce:
1. create hostgroup with single whitespace in name
2.
3.

Actual results:
Hostgroup created successfully but when I tried to delete/edit it, UI says:

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Host Group Not Found

Please try to update your request
---
Expected results:
1. User shouldn't be allowed to create hostgroup with single whitespace

Additional info:
production.log:

Processing by HostgroupsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"8YKMIr6xgzHyJpwH0LC3VbHzoQSwOk+VOG2XoH0FhiE=", "hostgroup"=>{"parent_id"=>"", "name"=>"\"\"", "environment_id"=>"", "content_source_id"=>"", "puppet_ca_proxy_id"=>"", "puppet_proxy_id"=>"", "domain_id"=>"", "realm_id"=>"", "architecture_id"=>"", "root_pass"=>"[FILTERED]", "location_ids"=>[""], "organization_ids"=>[""]}, "kt_environment_id"=>"", "kt_activation_keys"=>"", "commit"=>"Submit"}
Redirected to https://qetello02.usersys.redhat.com/hostgroups
Completed 302 Found in 35ms (ActiveRecord: 7.4ms)