Please review (phase 2): [389 Project] #47838: harden the list of ciphers available by default

[Noriko Hosoi]

https://fedorahosted.org/389/ticket/47838

https://fedorahosted.org/389/attachment/ticket/47838/0001-Ticket-47838-harde...
git patch file (master) -- phase 2

https://fedorahosted.org/389/attachment/ticket/47838/0001-Ticket-47838-CI-te...
git patch file (master) -- CI test: adjusted test cases based on the 
phase 2 fixes for ticket 47838