Add support for setting forceAuth, comparisonType, bindingUri to the Saml2Client

The Saml2Client assumes default values for forceAuth (false), comparisonType and bindingUri (HTTP-POST). This patch allows the applications to customize these options.
I know but I like explicit declaration :-)


2014-08-20 11:05 GMT+02:00 Ganesh Subramanian <notifications@github.com>:

> In pac4j-saml/src/main/java/org/pac4j/saml/client/Saml2Client.java:
>
> > @@ -120,6 +123,12 @@
> >      private EncryptionProvider encryptionProvider;
> >
> >      private String spMetadata;
> > +
> > +    private boolean forceAuth;
>
> It takes the default primitive value. 'false' in this case.
>
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> <https://github.com/leleuj/pac4j/pull/74/files#r16465485>.
>