Description of problem:
The documentation of RHEV 3.5 states to enable the following channels:
# subscription-manager repos --enable=rhel-7-server-rpms
# subscription-manager repos --enable=rhel-7-server-supplementary-rpms
# subscription-manager repos --enable=rhel-7-server-rhev-mgmt-agent-rpms
(Taken from https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.5/html/Installation_Guide/Subscribing_to_the_Required_Entitlements.html)

But indeed also the optional channel is required:
# subscription-manager repos --enable=rhel-7-server-optional-rpms

Version-Release number of selected component (if applicable):
Current RHEV 3.5 Documentation

How reproducible:
Always

Steps to Reproduce:
1. Subscribe only to the channels listed in the documentation:
   # subscription-manager repos --enable=rhel-7-server-rpms
   # subscription-manager repos --enable=rhel-7-server-supplementary-rpms
   # subscription-manager repos --enable=rhel-7-server-rhev-mgmt-agent-rpms
2. Try installing ovirt-hosted-engine-setup as described in Docs:
   # yum upgrade
   # yum install ovirt-hosted-engine-setup

Actual results:
The installation will fail with broken dependencies.
After subscribing to optional channel as well, the installation succeeeds.

Expected results:
Following the documentation the installation should work.


Additional info:
Please add the necessary optional channel to the Documentation, so please modify:

# subscription-manager repos --enable=rhel-7-server-rpms
# subscription-manager repos --enable=rhel-7-server-supplementary-rpms
# subscription-manager repos --enable=rhel-7-server-rhev-mgmt-agent-rpms

to:

# subscription-manager repos --enable=rhel-7-server-rpms
# subscription-manager repos --enable=rhel-7-server-supplementary-rpms
# subscription-manager repos --enable=rhel-7-server-rhev-mgmt-agent-rpms
# subscription-manager repos --enable=rhel-7-server-optional-rpms