Use trusted SSL Certificates in tests (LDAP etc. )

We have a test (orchestrated in this MR) that use self signed SSL certificates for LDAP login. We need to use a trusted certificate in the tests to be as close to reality as possible. We can either create a root CA certificate and sign the ssl certificate with it (See: this and this) or use a known/trusted CA issued certificate.

There is some information here for using selenium for testing web sites with https