ctdb-tests: Convert local daemons include file into top-level include

ctdb-tests: Convert local daemons include file into top-level include

Do the same with the alternative code for real clusters.

Both of these can now be used by other test suites.

Fix some basic shellcheck warnings (e.g. avoid word-splitting by
quoting) while moving code and add the new files to the shellcheck
test.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>