Ssl files needed for the test https server.

* bzrlib/tests/ssl_certs/create_ssls.py: 
Script to create the ssl keys and certificates.

* bzrlib/tests/ssl_certs/server.crt: 
Server certificate signed by the certificate authority.

* bzrlib/tests/ssl_certs/server.csr: 
Server certificate signing request.

* bzrlib/tests/ssl_certs/server_without_pass.key: 
Server key usable without password.

* bzrlib/tests/ssl_certs/server_with_pass.key: 
Server key.

* bzrlib/tests/ssl_certs/ca.key: 
Certificate authority private key.

* bzrlib/tests/ssl_certs/ca.crt: 
Certificate authority certificate.

* bzrlib/tests/ssl_certs/__init__.py: 
Provide access to ssl files (keys and certificates).