Add a note about CA Siteminder long headers and Jetty

I've heard from some users running Siteminder that the header
length on some of their cookies is longer than what Jetty can
accept by default.  Upping the limit seems to fix their problem,
so suggest it in the docs.

Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed