Fix for "local variable _COLLECT_NOEXEC_ERRORS referenced before assi…

…gnment" (#2935) (#2944)

* Fix for "local variable _COLLECT_NOEXEC_ERRORS referenced before assignment"

* pylint

---------

Co-authored-by: narrieta <narrieta>
(cherry picked from commit c5181c0)

azurelinuxagent/common/utils/extensionprocessutil.py

@@ -107,6 +107,10 @@ def _check_noexec():
     """
     Check if /var is mounted with the noexec flag.
     """
+    # W0603: Using the global statement (global-statement)
+    # OK to disable; _COLLECT_NOEXEC_ERRORS is used only within _check_noexec, but needs to persist across calls.
+    global _COLLECT_NOEXEC_ERRORS  # pylint: disable=W0603
+
     try:
         agent_dir = conf.get_lib_dir()
         with open('/proc/mounts', 'r') as f: