[CI] Have list of files that we don't complain about

Jenkins should complain about new files and those already fixed. After
fixing a file completely, the file path should be removed from the list.

This is helpful for pylint, because some errors, mostly from category
"refactor", are attributed to the line with function's signature and are
liable to be missed by the heuristics.

.ci/prfilter

@@ -2,11 +2,60 @@
 
 import collections
 import json
+import pathlib
 import subprocess
 import sys
 
 DEFAULT_REF = 'origin/master'
 
+THE_BIG_LIST_OF_NAUGHTY_FILES = list(map(pathlib.Path, [
+    #
+    # Problems with files listed here get lighter treatment: they are blocking
+    # only when they are a part of the current pull request.
+    #
+
+    # for pylint
+    'Documentation/conf.py',
+    'LibOS/shim/test/apps/ltp/contrib/conf_lint.py',
+    'LibOS/shim/test/apps/ltp/contrib/conf_merge.py',
+    'LibOS/shim/test/apps/ltp/contrib/conf_missing.py',
+    'LibOS/shim/test/apps/ltp/contrib/conf_remove_must_pass.py',
+    'LibOS/shim/test/apps/ltp/contrib/has_own_main.py',
+    'LibOS/shim/test/apps/ltp/contrib/report.py',
+    'LibOS/shim/test/apps/ltp/runltp_xml.py',
+    'LibOS/shim/test/apps/python-scipy-insecure/scripts/test-numpy.py',
+    'LibOS/shim/test/apps/python-scipy-insecure/scripts/test-scipy.py',
+    'LibOS/shim/test/apps/python-simple/scripts/benchrun.py',
+    'LibOS/shim/test/apps/python-simple/scripts/dummy-web-server.py',
+    'LibOS/shim/test/apps/python-simple/scripts/fibonacci.py',
+    'LibOS/shim/test/apps/python-simple/scripts/helloworld.py',
+    'LibOS/shim/test/apps/python-simple/scripts/test-http.py',
+    'LibOS/shim/test/fs/test_fs.py',
+    'LibOS/shim/test/regression/test_libos.py',
+    'Pal/regression/test_pal.py',
+    'Pal/src/host/Linux-SGX/sgx-driver/link-intel-driver.py',
+    'Pal/src/host/Linux/pal-gdb.py',
+    'Scripts/regression.py',
+    'Tools',
+
+    # for shellcheck
+    'LibOS/shim/test/apps/bash/scripts/bash_test.sh',
+    'LibOS/shim/test/apps/common_tools/benchmark-http.sh',
+    'LibOS/shim/test/apps/python-simple/run-tests.sh',
+    'LibOS/shim/test/native',
+    'Pal/src/host/FreeBSD/pal-gdb.template',
+    'Pal/src/host/Linux-SGX/debugger/gdb',
+    'Pal/src/host/Linux-SGX/sgx-driver/load.sh',
+    'Runtime/pal_loader',
+    'Scripts/clean-check',
+    'Scripts/clean-check-prepare',
+    'Scripts/clean-check-test-copy',
+    'Scripts/list-all-graphene.sh',
+    'Scripts/memusg',
+    '.ci/run-pylint',
+    '.ci/run-shellcheck',
+]))
+
 def get_diff_ranges(ref=DEFAULT_REF):
     '''Get chunks affected by a merge request
 
@@ -45,6 +94,8 @@ class Diff:
     >>> diff = Diff()
     >>> (message['file'], message['line']) in diff
     True # or False
+    >>> diff.message_is_important(message)
+    True # or False
 
     The default diff is to the ``origin/master`` ref.
     '''
@@ -60,6 +111,26 @@ class Diff:
         except KeyError:
             return False
 
+    def message_is_important(self, message):
+        path = pathlib.Path(message['path'])
+        for i in THE_BIG_LIST_OF_NAUGHTY_FILES:
+            try:
+                path.relative_to(i)
+                break
+            except ValueError:
+                # path is not .relative_to() the path from WHITELIST
+                pass
+        else:
+            # not on whitelist: always complain
+            return True
+
+        if (message['path'], message['line']) in self:
+            # on whitelist, but in diff: do complain
+            return True
+
+        # on whitelist and outside diff: don't complain
+        return False
+
 def main():
     diff = Diff()
     with sys.stdin:
@@ -73,7 +144,7 @@ def main():
         if 'symbol' not in message:
             message['symbol'] = message['code']
 
-        if (message['path'], message['line']) in diff:
+        if diff.message_is_important(message):
             if not ret:
                 print('MESSAGES AFFECTING THIS PR:')
             print('{path} +{line}:{column}: {symbol}: {message}'.format(

.pylintrc

@@ -76,7 +76,7 @@ evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / stateme
 output-format=colorized
 
 # Tells whether to display a full report or only the messages.
-reports=yes
+reports=no
 
 # Activate the evaluation score.
 score=no