TagsCheck: handle license exception in grouping

A valid license exception which is in a grouping is reported as invalid.
This is due to the trailing ')' being included in the regex.  The
following license:

    (GPL-2.0-only OR GPL-3.0-only WITH Qt-GPL-exception-1.0) AND MIT

returns:

    W: invalid-license-exception Qt-GPL-exception-1.0)

Adjust the license_exception_regex to exclude trailing parenthesis.

Fixes: https://bugzilla.redhat.com/2175241

rpmlint/checks/TagsCheck.py

@@ -21,7 +21,7 @@
 leading_space_regex = re.compile(r'^\s+')
 pkg_config_regex = re.compile(r'^/usr/(?:lib\d*|share)/pkgconfig/')
 license_regex = re.compile(r'\(([^)]+)\)|\s(?:and|or|AND|OR)\s')
-license_exception_regex = re.compile(r'(\S+)\s(?:WITH|with)\s(\S+)')
+license_exception_regex = re.compile(r'(\S+)\s(?:WITH|with)\s([^)]+)')
 invalid_version_regex = re.compile(r'([0-9](?:rc|alpha|beta|pre).*)', re.IGNORECASE)
 # () are here for grouping purpose in the regexp
 tag_regex = re.compile(r'^((?:Auto(?:Req|Prov|ReqProv)|Build(?:Arch(?:itectures)?|Root)|(?:Build)?Conflicts|(?:Build)?(?:Pre)?Requires|Copyright|(?:CVS|SVN)Id|Dist(?:ribution|Tag|URL)|DocDir|(?:Build)?Enhances|Epoch|Exclu(?:de|sive)(?:Arch|OS)|Group|Icon|License|Name|No(?:Patch|Source)|Obsoletes|Packager|Patch\d*|Prefix(?:es)?|Provides|(?:Build)?Recommends|Release|RHNPlatform|Serial|Source\d*|(?:Build)?Suggests|Summary|(?:Build)?Supplements|(?:Bug)?URL|Vendor|Version)(?:\([^)]+\))?:)\s*\S', re.IGNORECASE)

test/test_tags.py

@@ -77,6 +77,18 @@ def test_valid_license_exception(tmpdir, package, tagscheck):
     assert 'W: invalid-license-exception' not in out
 
 
+@pytest.mark.parametrize('package', ['source/valid-exception-in-grouping'])
+def test_valid_license_exception_in_grouping(tmpdir, package, tagscheck):
+    CONFIG.info = True
+    CONFIG.configuration['ValidLicenses'] = ['BSD-3-Clause', 'GPL-2.0-only']
+    CONFIG.configuration['ValidLicenseExceptions'] = ['Qt-GPL-exception-1.0']
+    output = Filter(CONFIG)
+    test = TagsCheck(CONFIG, output)
+    test.check(get_tested_package(package, tmpdir))
+    out = output.print_results(output.results)
+    assert 'W: invalid-license-exception' not in out
+
+
 @pytest.mark.parametrize('package', ['binary/xtables-addons-kmp-default'])
 def test_forbidden_controlchar_found_requires(tmpdir, package, tagscheck):
     output, test = tagscheck