Many TestJig methods made the caller pass a serviceName argument, even
though the jig already has a name, and every caller was passing the
same name to each function as they had passed to NewTestJig().
Likewise, many methods made the caller pass a namespace argument, but
only a single test used more than one namespace, and it can easily be
rewritten to use two test jigs as well.
Remove the "OrDie" from the name (since it doesn't "or die") and add
an extra check that there is at least 1 node available, since many
callers already did that themselves, and many others should have.
add test for network connectivity check
update tests
complete tests
Review feedback
run update-bazel
feature flag connectivity test
remove dead code
add todo
