Fixed breadcrumb link for "Services" in Host Summary screen

Ensured that the explorer action gets called for the Services breadcrumb
link.

https://bugzilla.redhat.com/show_bug.cgi?id=1148636
Merge pull request #1027 from AparnaKarve/bz1148636_explorer_action_to_service

Fixed breadcrumb link for "Services" in Host Summary screen