[pkg-apparmor] Bug#905160: apparmor: parser: disable expression tree simplification

[intrigeri at debian.org]

Package: apparmor
Version: 2.13-6
Severity: normal
X-Debbugs-Cc: Jamie Strandboge <jamie at ubuntu.com>

See discussion that starts on
https://salsa.debian.org/apparmor-team/apparmor/merge_requests/9#note_35068

The attached patch implements the solution Jamie and I agreed on but
it breaks the autopkgtests:

simple.pl (Wstat: 768 Tests: 71577 Failed: 3)
  Failed tests:  71092, 71482-71483
  TODO passed:   71447, 71458-71459, 71493, 71576
  Non-zero exit status: 3

… so more work is needed here, to adjust the test suite to the
config change we want to apply.

Note that the tests do pass when they're run on a system where
/etc/apparmor/parser.conf does *not* contain
Optimize=no-expr-simplify.

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