Description of problem: capsule-certs-generate and satellite-installer fail immediately if any of the provided argument contains '-S'.

Example:
1]--server-ca-cert "/root/certs/A-STest.crt"  

#capsule-certs-generate --foreman-proxy-fqdn "capsule.fqdn.here"   --certs-tar  "~/capsule-certs.tar"  --server-cert "/root/ssl-build/capsule.fqdn.here/capsule_cert.pem"  --server-key "/root/ssl-build/capsule.fqdn.here/capsule_cert_key.pem"  --server-ca-cert "/root/certs/A-STest.crt"

ERROR: Scenario (/usr/share/foreman-installer/katello-certs/scenarios.d/Test.crt.yaml) was not found, can not continue

2] --certs-server-cert "/etc/pki/katello/certs/katello-S-apache.crt" 

#satellite-installer --scenario satellite                      --certs-server-cert "/etc/pki/katello/certs/katello-S-apache.crt"                       --certs-server-key "/etc/pki/katello/private/katello-apache.key"                       --certs-server-ca-cert "/etc/pki/katello/certs/katello-server-ca.crt"
[ INFO 2020-06-12T21:13:23 verbose] Executing hooks in group pre_migrations
[ INFO 2020-06-12T21:13:23 verbose] All hooks in group pre_migrations finished
[ERROR 2020-06-12T21:13:23 verbose] You are trying to replace existing installation with different scenario. This may lead to unpredictable states. Use --force to override. You can use --compare-scenarios to see the differences
[ INFO 2020-06-12T21:13:23 verbose] Log was be written to /var/log/foreman-installer/satellite.log
[ INFO 2020-06-12T21:13:23 verbose] Logs flushed



Version-Release number of selected component (if applicable):
Satellite 6.5/6.6/6.7

How reproducible:
Always

Steps to Reproduce:
1. #capsule-certs-generate --foreman-proxy-fqdn "capsule.fqdn.here"   --certs-tar  "~/capsule-certs.tar"  --server-cert "/root/ssl-build/capsule.fqdn.here/capsule_cert.pem"  --server-key "/root/ssl-build/capsule.fqdn.here/capsule_cert_key.pem"  --server-ca-cert "/root/certs/A-STest.crt"

2.#satellite-installer --scenario satellite                      --certs-server-cert "/etc/pki/katello/certs/katello-S-apache.crt"                       --certs-server-key "/etc/pki/katello/private/katello-apache.key"                       --certs-server-ca-cert "/etc/pki/katello/certs/katello-server-ca.crt"

3.# satellite-installer --help |grep "-S"
grep: invalid option -- 'S'
Usage: grep [OPTION]... PATTERN [FILE]...
Try 'grep --help' for more information.
/usr/share/gems/gems/clamp-1.1.2/lib/clamp/command.rb:139:in `write': Broken pipe - <STDOUT> (Errno::EPIPE)
	from /usr/share/gems/gems/clamp-1.1.2/lib/clamp/command.rb:139:in `puts'
	from /usr/share/gems/gems/clamp-1.1.2/lib/clamp/command.rb:139:in `puts'
	from /usr/share/gems/gems/clamp-1.1.2/lib/clamp/command.rb:139:in `rescue in run'
	from /usr/share/gems/gems/clamp-1.1.2/lib/clamp/command.rb:132:in `run'
	from /usr/share/gems/gems/kafo-4.0.1/lib/kafo/kafo_configure.rb:162:in `run'
	from /usr/sbin/satellite-installer:8:in `<main>'



Actual results:
Fails with the above-mentioned errors.

Expected results:
It should not fail.

Additional info:
#capsule-certs-generate --help
    -S, --scenario SCENARIO       Use installation scenario

#satellite-installer --help
    -S, --scenario SCENARIO       Use installation scenario