gossip: add trigger groups to web_debug_info

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7075 71766da9-9752-0410-ab17-bfafa751c56a
gossip_SUITE: tweak gossip_load tests

There can be a timing issue preventing correct conversion in the first gossiping
round for test_load. This timing issue is relatively rare. Previously this was
coped with by waiting two rounds per default. This tweak instead repeats the
tests up to three times until success, thus hopefully reducing the standard
execution time of the suite in the default case.

This hopefully also fixes the rare occasions of the test_no_load failing (which
was set to waiting only one round).

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7076 71766da9-9752-0410-ab17-bfafa751c56a
gossip_SUITE: remove setting the gossip_load_interval to zero

Setting the gossip_load_interval to zero has no effect, because msg_delay is only
triggered once a second anyway.

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7077 71766da9-9752-0410-ab17-bfafa751c56a