Updated ssntp/README.md added link to ciao-cert
Updated ssntp/README.md added link to ciao-cert

Added a link to the ciao-cert repo in the ssntp README to provided
instructions on certificate generation for ssntp.

Signed-off-by: John Andersen <3874c65cfcc74fc62edb55fddbe41f33693e4549@intel.com>

tpepper/ciao,leoswaldo/ciao,01org/ciao,matthewrsj/ciao,ciao-project/ciao,rbradford/ciao,tpepper/ciao,01org/ciao,jorgevgut/ciao,leoswaldo/ciao,mcastelino/ciao,markdryan/ciao,mcastelino/ciao,kaccardi/ciao,erick0z/ciao,rbradford/ciao,erick0z/ciao,mrkz/ciao,tpepper/ciao,matthewrsj/ciao,markdryan/ciao,obedmr/ciao,erick0z/ciao,obedmr/ciao,wcwxyz/ciao,leoswaldo/ciao,wcwxyz/ciao,wcwxyz/ciao,jorgevgut/ciao,ciao-project/ciao,matthewrsj/ciao,mrkz/ciao,obedmr/ciao,mcastelino/ciao,jorgevgut/ciao,mrkz/ciao,kaccardi/ciao