Install sshpass from EPEL for --ask-pass testing
Install sshpass from EPEL for --ask-pass testing

sshpass is used in the initial implementation of the --ask-pass
option and the related integration test scenario.

Until a longer term approach to enabling that functionality is
settled, we just install the dependency from EPEL as part of
bootstrapping the CI environment.

vmindru/prototype,mfranczy/prototype,mfranczy/prototype,pcahyna/leapp-to-prototype,ncoghlan/prototype,vmindru/prototype,GAZDOWN/prototype,leapp-to/prototype,ncoghlan/prototype,GAZDOWN/prototype,vmindru/prototype,GAZDOWN/prototype,GAZDOWN/prototype,vinzenz/prototype,vinzenz/prototype,mfranczy/prototype,pcahyna/leapp-to-prototype,leapp-to/prototype,leapp-to/prototype,leapp-to/prototype,GAZDOWN/leapp,vinzenz/prototype,vinzenz/prototype,ncoghlan/prototype,ncoghlan/prototype,mfranczy/prototype,pcahyna/leapp-to-prototype,GAZDOWN/leapp,vmindru/prototype,pcahyna/leapp-to-prototype