Fixed an issue when configuration file options partly ignored when `--project-conf` // Resolve #3034 (#3055)

* Fixed an issue when configuration file options partly ignored when using custom ``--project-conf`` // Resolve #3034

* Py2 compatible makedirs

* Fix circle dependency

* Fix broken import in test examples

* Fix history

* Remove YAPF markers

* PyLint fix

* Fix invalid project conf path

* Move PIO Core to the root on Windows, issue with long CPPPATHs

* Respect global PLATFORMIO_BUILD_CACHE_DIR env var

* Fix Appveyor paths

* Minor changes

platformio/debug/server.py

@@ -64,7 +64,7 @@ class DebugServer(BaseProcess):
         self._debug_port = ":3333"
         openocd_pipe_allowed = all(
             [not self.debug_options["port"], "openocd" in server_executable]
-        )  # yapf: disable
+        )
         if openocd_pipe_allowed:
             args = []
             if server["cwd"]: