[Bug 998] Network install/upgrade is unsafe, should check GPG signatures.

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=998

--- Comment #47 from CFME Bot  ---
Commits pushed to master at https://github.com/ManageIQ/cfme

https://github.com/ManageIQ/cfme/commit/ccde956b39ccfd956aae91ed17a4a889a213...
Changed Security Groups field to be a multiple select field.

Changed Security Groups in the provisioning dialog to be a multiple select
field. Ids of selected security groups is saved as an array of ids.

Issue #998
Bug 1004946

https://github.com/ManageIQ/cfme/commit/74a22276abbe0438af064c07b4b5ac2023e1...
Squashed duplicated select_tag into a single select_tag.

Moved select_tag for security_grouos into an if above that's used for other
drop-down fields with some checks to show security_groups as multi select
field.

Issue #998
Bug 1004946

https://github.com/ManageIQ/cfme/commit/48960b5546de7ddf158c7e862dbe6fe622ba...
More changes to eliminate a select_tag that's not required.

Changed to show selected values in a list on summary screen instead of showing
them in a disabled multi select_tag and some minor code alignment changes.

Issue #998
Bug 1004946