ITS#8904 - Ensure SSLv3 is enabled when necessary

Either at compilation time, or as a system-wide configuration, OpenSSL
may have disabled SSLv3 protocol by default. This change ensures the
protocol NO flag is cleared when necessary, hence allowing for the
protocol to be used.
3 jobs for !257 with its8904 in 50 minutes and 47 seconds (queued for 51 minutes)
latest detached
Status Job ID Name Coverage
  Build
passed #4393
build-gnutls-mit-standalone-lloadd

00:40:32

passed #4391
build-no-threads-no-slapd

00:02:51

passed #4392
build-openssl-heimdal-lloadd

00:43:35