Description of problem:
By default log collector points to: /etc/pki/ovirt-engine/ca.pem what is wrong in my honest opinion because I think it should point out to apache-ca.pem (it uses REST API so should depend on apache's cert, not ca.pem)
At the beginning (default installation)  /etc/pki/ovirt-engine/apache-ca.pem is the same as /etc/pki/ovirt-engine/ca.pem
If customer replaces RHV-M SSL certificate with his/her organization's commercially signed certificate, then he experiences an issue:

ERROR: Failure fetching information about hypervisors from API.
Error (Error): ('Error while sending HTTP request', error(60, "Peer's Certificate issuer is not recognized."))
ERROR: _get_hypervisors_from_api: ('Error while sending HTTP request', error(60, "Peer's Certificate issuer is not recognized."))


Version-Release number of selected component (if applicable):
RHV 3.x, 4.x

How reproducible:
always

Steps to Reproduce:
1. replace certificate according to:
https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.0/html/administration_guide/appe-red_hat_enterprise_virtualization_and_ssl#Replacing_the_Manager_SSL_Certificate
2. run ovirt-log-collector

Actual results:
ERROR: Failure fetching information about hypervisors from API.
Error (Error): ('Error while sending HTTP request', error(60, "Peer's Certificate issuer is not recognized."))
ERROR: _get_hypervisors_from_api: ('Error while sending HTTP request', error(60, "Peer's Certificate issuer is not recognized."))

Expected results:
ovirt-log-collectors uses: /etc/pki/ovirt-engine/apache-ca.pem

Additional info:
There is easy fix of this problem: 
vim /etc/ovirt-engine/logcollector.conf
cert-file=/etc/pki/ovirt-engine/apache-ca.pem
But it should be by default.