Add in extra connections tests

Test reporting back to gerrit as a different user.
Test multiple gerrit instances.

Squashed with: Assign fake connections to test class dynamically

As multiple connections can be configured for testing purposes, it makes
more sense to be able to access them all comfortably.

Drawback of this change is, that the dynamicism makes the code less
readable and less obvious.
Previously: If50567dd5a087e9fe46cd4e30f9e0562cda794d7

Co-Authored-By: Jan Hruban <jan.hruban@gooddata.com>

Change-Id: I4652799c8b9a626bd2f7f6996d09c95da2953936
diff --git a/tests/fixtures/zuul-connections-same-gerrit.conf b/tests/fixtures/zuul-connections-same-gerrit.conf
new file mode 100644
index 0000000..af31c8a
--- /dev/null
+++ b/tests/fixtures/zuul-connections-same-gerrit.conf
@@ -0,0 +1,42 @@
+[gearman]
+server=127.0.0.1
+
+[zuul]
+layout_config=layout-connections-multiple-voters.yaml
+url_pattern=http://logs.example.com/{change.number}/{change.patchset}/{pipeline.name}/{job.name}/{build.number}
+job_name_in_report=true
+
+[merger]
+git_dir=/tmp/zuul-test/git
+git_user_email=zuul@example.com
+git_user_name=zuul
+zuul_url=http://zuul.example.com/p
+
+[swift]
+authurl=https://identity.api.example.org/v2.0/
+user=username
+key=password
+tenant_name=" "
+
+default_container=logs
+region_name=EXP
+logserver_prefix=http://logs.example.org/server.app/
+
+[connection review_gerrit]
+driver=gerrit
+server=review.example.com
+user=jenkins
+sshkey=none
+
+[connection alt_voting_gerrit]
+driver=gerrit
+server=review.example.com
+user=civoter
+sshkey=none
+
+[connection outgoing_smtp]
+driver=smtp
+server=localhost
+port=25
+default_from=zuul@example.com
+default_to=you@example.com