freeipa-stats: Add csv-file-name to plot

This prevents the test from being reconfigured each time tests
are updated, since the default random filename would cause cache misses
Add the LDAP URI to ~/.ipa/default.conf
Do not call make-testcert any more
Add /usr/sbin to $PATH for out-of-tree-tests

This is needed to locate ipa-getkeytab
Add first WebUI test
Add freeipa-webui-firefox-{os}-no-dns-no-ca job
Add simple replication integration tests