Notes regarding SAML2RedirectSSOFlowTest

[Tom Zeller]

Just committed a pretty horrible test to the testbed for the SAML 2
redirect SSO flow.

For flow tests, I added the ProfileRequestContext as a flow outcome
output attribute in the SAML 1 and 2 abstract flows,
sso-abstract-flow.xml. Probably not what we want long term.

In the SAML2RedirectSSOFlowTest, I copy-pasted setup methods from the
testbed sp.Saml2Controller. In the short amount of time I spent I was
unable to get auto-wiring to work properly, so much of the code in the
test is subject to refactoring.

However, the test does run and at least asserts that attributes are
correctly returned from the in-memory ldap server.