Ignore file for ansible-test sanity 2.12

These are skips for python 2.6 with import-2.6!skip and
compile-2.6!skip, ignores for the exit_raw_json function in
ansible_freeipa_module.py for use with ipavault, the ignore of using
automatic field numbering for the string format function, the use of
string split without maxsplits (not working in Python2), skips of the
shebang tests for scripts in tests and utils and the ignore of missing
collection_name for deprecate function calls in
ansible_freeipa_module.py.