SYNCOPE-1680: support Simple MFA for WA

[mmoayyed]

See https://issues.apache.org/jira/browse/SYNCOPE-1680

A few things to note:

• WA is only tasked to manage "CAS"-owned settings. Simple MFA typically requires additional configuration (such as managing the email server setup) that are handled by Spring and Spring Boot, as part of "spring.mail.*" settings. Those need to be managed separately in property files, etc.

A more precise view of the changes can be seen here: https://github.com/apache/syncope/compare/master...mmoayyed:SYNCOPE-1680?w=1

[mmoayyed]

@mdisabatino Could you take a look and let me know if this works for you?

[ilgrosso]

@mmoayyed a question: what is the expected value of bypassGroovyScript? A path or the actual script content?

Nice to see how Console is leveraging bean reflection to build UI, BTW :-)

[mmoayyed]

Yes indeed, I was pleasantly surprised to see the UI pick up all relevant settings. Very nice!

To your question: the script setting is a path to a Groovy script that would evaluate bypass rules. It ultimately maps to this, as an example:

cas.authn.mfa.simple.bypass.groovy.location=file:${CAS_CONF_DIRECTORY}/mfaSimpleTrigger.groovy