Ticket #47880 - provide enabled ciphers as search result
    
    Description: Implemented getEnabledCiphers, with which
      ldapsearch -b "cn=encryption,cn=config" nsSSLEnabledCiphers
    returns enabled cipher list.  Example of returned enabled cipher
      dn: cn=encryption,cn=config
      nsSSLEnabledCiphers: TLS_RSA_WITH_RC4_128_MD5::RC4::MD5::128
      nsSSLEnabledCiphers: SSL_CK_DES_192_EDE3_CBC_WITH_MD5::3DES::MD5::192
    
    https://fedorahosted.org/389/ticket/47880
    
    Reviewed by mreynolds@redhat.com (Thank you, Mark!)
    
    (cherry picked from commit c675243e018a89291760161998944c04ea04b12f)
    (cherry picked from commit 8de80533cbfdb22166f5595839307a6a6db5a636)