data structure for known hosts. Refs #17574
create dao structure. Refs #17574
add save/fetch for known hosts. Refs #17574
add fetch all for known hosts. Refs #17574
add thin service layer. Refs #17574
add known hosts controller. Refs #17574
list all known hosts in UI. Refs #17574
known hosts save methods. Refs #17574
only admin role could access known host. Refs #17574
add known host add form to UI. Refs #17574
allow to update saved hosts. Refs #17574
add service method to update host. Refs #17574
allow to open host for edit. Refs #17574
allow to update host. Refs #17574
allow to update known host from UI. Refs #17574