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Fix checks against scl name, optimise rhel/empty SCL conditional

Converted spec files

Automatic commit of package [rubygem-multi_json] minor release [1.10.1-1].

Update multi_json to 1.10.1

Automatic commit of package [rubygem-multi_json] minor release [1.8.2-2].

refs #4452, #4453 - modernise and update for EL7

Import hammer_cli dependencies