Fix ssh root certificates path for Blackberry playbook OS.

This was removed by commit 4c8d8a72ec
But without it Playbook OS 2.1.0.1753 could not access ssh properly.

Change-Id: I18e136eaede2a5dffeb10b5fe31023b9aef709cb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Peter Hartmann <phartmann@blackberry.com>

src/network/ssl/qsslsocket.cpp

@@ -2439,6 +2439,7 @@ QList<QByteArray> QSslSocketPrivate::unixRootCertDirectories()
                                << "/usr/local/ssl/" // Normal OpenSSL Tarball
                                << "/var/ssl/certs/" // AIX
                                << "/usr/local/ssl/certs/" // Solaris
+                               << "/var/certmgr/web/user_trusted/" // BlackBerry Playbook
                                << "/etc/openssl/certs/" // BlackBerry
                                << "/opt/openssl/certs/"; // HP-UX
 }