Support custom configuration schema, and fault injection testing

[tylergu]

This PR adds the following new features to Acto:

Using Custom Schema for Opaque Properties in CRDs

Acto now supports to test opaque schemas with a user-specific schema. This feature is useful for testing the applications' configuration interface, without having to rewrite the CRD.

Support Fault-Injection Testing via Chactos

Acto now supports to test operators in the presence of application faults. Chactos injects different types of application faults before each test and after each test.

Porting new operator versions to Acto

We ported some operators with their newest version. The operators' porting files are under versioned directories under the /data directory.

[github-actions]

Coverage report

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File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
acto
deploy.py					23-28
engine.py					86, 151-159, 297, 416-417, 603-606, 774-776, 895-900
oracle_handle.py					46-60, 68
result.py					78, 81
snapshot.py
acto/checker
checker_set.py
acto/checker/impl
health.py					20
state_compare.py					88-98, 162-163, 172-178
acto/checker/impl/tests
test_state.py
acto/input
input.py					241-272, 581
testcase.py
value_with_schema.py
acto/input/test_generators
__init__.py
configuration.py					19-93
generator.py
stateful_set.py
acto/post_process
collect_test_result.py					11, 21, 39-44
post_diff_test.py					278-292, 492, 621, 642-650, 819, 879, 884, 1033
acto/runner
runner.py					115, 135, 144-145, 177, 186, 205, 344-358, 365-383, 390-395, 490-493
acto/schema
string.py					57-61
under_specified.py					14-16, 34, 39, 42, 49, 52, 55, 58, 63, 68
acto/system_state
stateful_set.py					58-63
acto/utils
k8s_helper.py					128
process_with_except.py					12
Project Total

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