Add Proguard artifact endpoint for Android builds

Author: alexsohn1126

sentry-cli/integration-test/sentry-server.py

@@ -93,6 +93,8 @@ def do_POST(self):
             self.writeJSON('{ }')
         elif self.isApi('api/0/organizations/{}/chunk-upload/'.format(apiOrg)):
             self.writeJSON('{ }')
+        elif self.isApi('/api/0/projects/{}/{}/files/proguard-artifact-releases/'.format(apiOrg, apiProject)):
+            self.writeJSON('{ }')
         elif self.isApi('api/0/envelope'):
             sys.stdout.write("     envelope start\n")
             sys.stdout.write(self.body)