Reworked Plugin loading

This patch reworked the loading of plugins.  Python2 is dead.
Previously was using the imp module to easily load the plugins from
a separate directory, which is a bit of a pita.  Found a python3 lib
that takes care of the difference between py3.3, 3.4 and 3.5+ module
loading called "thesmuggler"

aprsd/plugin.py

@@ -1,7 +1,6 @@
 # The base plugin class
 import abc
 import fnmatch
-import imp
 import inspect
 import json
 import logging
@@ -13,6 +12,7 @@ import time
 import pluggy
 import requests
 import six
+from thesmuggler import smuggle
 
 from aprsd.fuzzyclock import fuzzy
 
@@ -106,16 +106,10 @@ class PluginManager(object):
         for path, subdirs, files in os.walk(dir_path):
             for name in files:
                 if fnmatch.fnmatch(name, pattern):
-                    found_module = imp.find_module(name[:-3], [path])
-                    module = imp.load_module(
-                        name, found_module[0], found_module[1], found_module[2]
-                    )
+                    LOG.debug("MODULE? '{}' '{}'".format(name, path))
+                    module = smuggle("{}/{}".format(path, name))
                     for mem_name, obj in inspect.getmembers(module):
-                        if (
-                            inspect.isclass(obj)
-                            and inspect.getmodule(obj) is module
-                            and self.is_plugin(obj)
-                        ):
+                        if inspect.isclass(obj) and self.is_plugin(obj):
                             self.obj_list.append(
                                 {"name": mem_name, "obj": obj(self.config)}
                             )

dev-requirements.in

@@ -7,3 +7,4 @@ pep8-naming
 black
 isort
 Sphinx
+thesmuggler

dev-requirements.txt

@@ -11,6 +11,7 @@ babel==2.9.0              # via sphinx
 black==20.8b1             # via -r dev-requirements.in
 certifi==2020.12.5        # via requests
 chardet==3.0.4            # via requests
+click==7.1.2              # via black
 coverage==5.3             # via pytest-cov
 distlib==0.3.1            # via virtualenv
 docutils==0.16            # via sphinx
@@ -26,17 +27,17 @@ markupsafe==1.1.1         # via jinja2
 mccabe==0.6.1             # via flake8
 mypy-extensions==0.4.3    # via black, mypy
 mypy==0.790               # via -r dev-requirements.in
-packaging==20.7           # via pytest, sphinx, tox
+packaging==20.8           # via pytest, sphinx, tox
 pathspec==0.8.1           # via black
 pep8-naming==0.11.1       # via -r dev-requirements.in
 pluggy==0.13.1            # via pytest, tox
-py==1.9.0                 # via pytest, tox
+py==1.10.0                # via pytest, tox
 pycodestyle==2.6.0        # via flake8
 pyflakes==2.2.0           # via flake8
 pygments==2.7.3           # via sphinx
 pyparsing==2.4.7          # via packaging
 pytest-cov==2.10.1        # via -r dev-requirements.in
-pytest==6.1.2             # via -r dev-requirements.in, pytest-cov
+pytest==6.2.0             # via -r dev-requirements.in, pytest-cov
 pytz==2020.4              # via babel
 regex==2020.11.13         # via black
 requests==2.25.0          # via sphinx
@@ -49,6 +50,7 @@ sphinxcontrib-htmlhelp==1.0.3  # via sphinx
 sphinxcontrib-jsmath==1.0.1  # via sphinx
 sphinxcontrib-qthelp==1.0.3  # via sphinx
 sphinxcontrib-serializinghtml==1.1.4  # via sphinx
+thesmuggler==1.0.1        # via -r dev-requirements.in
 toml==0.10.2              # via black, pytest, tox
 tox==3.20.1               # via -r dev-requirements.in
 typed-ast==1.4.1          # via black, mypy

requirements.in

@@ -0,0 +1,9 @@
+click
+click-completion
+imapclient
+pluggy
+pbr
+pyyaml
+six
+requests
+thesmuggler

requirements.txt

@@ -1,8 +1,22 @@
-click
-click-completion
-imapclient
-pluggy
-pbr
-pyyaml
-six
-requests
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile
+#
+certifi==2020.12.5        # via requests
+chardet==3.0.4            # via requests
+click-completion==0.5.2   # via -r requirements.in
+click==7.1.2              # via -r requirements.in, click-completion
+idna==2.10                # via requests
+imapclient==2.1.0         # via -r requirements.in
+jinja2==2.11.2            # via click-completion
+markupsafe==1.1.1         # via jinja2
+pbr==5.5.1                # via -r requirements.in
+pluggy==0.13.1            # via -r requirements.in
+pyyaml==5.3.1             # via -r requirements.in
+requests==2.25.0          # via -r requirements.in
+shellingham==1.3.2        # via click-completion
+six==1.15.0               # via -r requirements.in, click-completion, imapclient
+thesmuggler==1.0.1        # via -r requirements.in
+urllib3==1.26.2           # via requests