Description of problem:
Only 20 entries per call are retrieved from foreman (hosts, hostgroups, compute resources).

The default api call to foreman returns the following details:

$ curl -s  -k -u admin:miFWnEsYMXD5iZPP http://node01:5000/api/v2/hostgroups | python -m json.tool
{
    "page": 1,
    "per_page": 20,
    "results": [
        {
          ...
        }
     ]
}

This seems to be common for other foreman resources fetched by ovirt-engine (except for Katello where pagination was implemented).

Version-Release number of selected component (if applicable):
master (but should exist since ovirt-foreman integration was introduced)

How reproducible:
100%

Steps to Reproduce:
1. Have satellite with over 20 host groups
2. Show the full list of host groups on RHV UI (hosts --> new host)

Actual results:
The list of hostgroups is limited to 20.

Expected results:
The entire list of hostgroups should be shown

Additional info:


Note for the develop that will fix the limited response size:
https://github.com/oVirt/ovirt-engine/blob/master/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/host/provider/foreman/ForemanHostProviderProxy.java#L44

Calls to foreman are done without 'per_page=99999' to simulate unlimited page size (all entries in one call) therefore the queries/urls should be changed to include it, i.e.:

http://node01:5000/api/v2/hostgroups?per_page=99999
and the response will reflect it:
{
    "page": 1,
    "per_page": 99999,
    "results": [
        {
        }
     ]
}