selftest/reproducible: Allow packages exclusion via config

OEQA_REPRODUCIBLE_EXCLUDED_PACKAGES can be used to prevent known
not-reproducible packages to make the reproducible test fail.

For example, in local.conf:
  OEQA_REPRODUCIBLE_EXCLUDED_PACKAGES = "example-not-reproducible"

To quote the original exclusion commit (4864764667)
> selftest/reproducible: add an exclusion list for items that are not yet reproducible
> [...]
> Non-reproducible excluded packages are not given to diffoscope and do not cause a
> failure, but still saved side-by-side with non-reproducible failing ones to make
> investigation easier.

NB: Patch was written by Richard with small fixes and a commit message
from Yoann.
(From OE-Core rev: bea0e3f5b8b383ae8590b874a5878f67832d6929)

Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/cases/reproducible.py

@@ -45,13 +45,14 @@ class CompareResult(object):
         return (self.status, self.test) < (other.status, other.test)
 
 class PackageCompareResults(object):
-    def __init__(self):
+    def __init__(self, exclusions):
         self.total = []
         self.missing = []
         self.different = []
         self.different_excluded = []
         self.same = []
         self.active_exclusions = set()
+        exclude_packages.extend((exclusions or "").split())
 
     def add_result(self, r):
         self.total.append(r)
@@ -161,6 +162,7 @@ class ReproducibleTests(OESelftestTestCase):
             'OEQA_REPRODUCIBLE_TEST_PACKAGE',
             'OEQA_REPRODUCIBLE_TEST_TARGET',
             'OEQA_REPRODUCIBLE_TEST_SSTATE_TARGETS',
+            'OEQA_REPRODUCIBLE_EXCLUDED_PACKAGES',
         ]
         bb_vars = get_bb_vars(needed_vars)
         for v in needed_vars:
@@ -183,7 +185,7 @@ class ReproducibleTests(OESelftestTestCase):
         self.extraresults['reproducible.rawlogs']['log'] += msg
 
     def compare_packages(self, reference_dir, test_dir, diffutils_sysroot):
-        result = PackageCompareResults()
+        result = PackageCompareResults(self.oeqa_reproducible_excluded_packages)
 
         old_cwd = os.getcwd()
         try: