test: fix use of ACLs in unit tests
test: Update acl test to schema 2.0
medium: Handle broken CIB in find_objects
test: Fix cibtests by stripping cib attributes

Getting crm_diff to compare CIB dumps correctly
in the face of timestamps and epochs is futile.
Instead, strip all <cib> attributes before
comparing the diffs in the cib tests.

Also update the tests with output matching
pacemaker schema 2.0.
high: scripts: Handle corosync.conf without nodelist in add-node (bnc#862577)