Provide checkConfig(), to support buildbot 2.9.x.

Apparently, as of buildbot 2.9.x, [reporters need to provide their own
checkConfig() implementation when a service has custom args not supplied
to the superclass](https://github.com/buildbot/buildbot/pull/5571).  If
we don't do this, checkconfig will fail.

buildbot_gitea/reporter.py

@@ -23,9 +23,12 @@ import re
 
 class GiteaStatusPush(http.HttpStatusPushBase):
     name = "GiteaStatusPush"
-    neededDetails = dict(wantProperties=True)
     ssh_url_match = re.compile(r"(ssh://)?[\w+\-\_]+@[\w\.\-\_]+:?(\d*/)?(?P<owner>[\w_\-\.]+)/(?P<repo_name>[\w_\-\.]+?)(\.git)?$")
 
+    def checkConfig(self, baseURL, token, startDescription=None, endDescription=None,
+                    context=None, verbose=False, wantProperties=True, **kwargs):
+        super().checkConfig(wantProperties=wantProperties, **kwargs)
+
     @defer.inlineCallbacks
     def reconfigService(self, baseURL, token,
                         startDescription=None, endDescription=None,

setup.py

@@ -18,7 +18,7 @@ setup(name='buildbot-gitea',
       long_description_content_type="text/markdown",
       packages=['buildbot_gitea'],
       requires=[
-          "buildbot (>=2.0.0)"
+          "buildbot (>=2.9.0)"
       ],
       entry_points={
           "buildbot.webhooks": [