Reload all plugins in a repo

`get_plugin_by_path` would only return the first plugin encountered in a
repository. This change adds the method `get_plugins_by_path` which yields
plugins as they are found.

For backwards compatibility, I have not deleted the original
`get_plugin_by_path` method, lest anyone use that method directly outside of
this package.

errbot/core_plugins/plugins.py

@@ -127,15 +127,15 @@ def repos_update(self, _, args):
             if success:
                 yield f"Update of {d} succeeded...\n\n{feedback}\n\n"
 
-                plugin = self._bot.plugin_manager.get_plugin_by_path(d)
-                if hasattr(plugin, "is_activated") and plugin.is_activated:
-                    name = plugin.name
-                    yield f"/me is reloading plugin {name}"
-                    try:
-                        self._bot.plugin_manager.reload_plugin_by_name(plugin.name)
-                        yield f"Plugin {plugin.name} reloaded."
-                    except PluginActivationException as pae:
-                        yield f"Error reactivating plugin {plugin.name}: {pae}"
+                for plugin in self._bot.plugin_manager.get_plugins_by_path(d):
+                    if hasattr(plugin, "is_activated") and plugin.is_activated:
+                        name = plugin.name
+                        yield f"/me is reloading plugin {name}"
+                        try:
+                            self._bot.plugin_manager.reload_plugin_by_name(plugin.name)
+                            yield f"Plugin {plugin.name} reloaded."
+                        except PluginActivationException as pae:
+                            yield f"Error reactivating plugin {plugin.name}: {pae}"
             else:
                 yield f"Update of {d} failed...\n\n{feedback}"
 

errbot/plugin_manager.py

@@ -370,6 +370,11 @@ def get_plugin_by_path(self, path):
             if str(pi.location.parent) == path:
                 return self.plugins[name]
 
+    def get_plugins_by_path(self, path):
+        for name, pi in self.plugin_infos.items():
+            if str(pi.location.parent) == path:
+                yield self.plugins[name]
+
     def deactivate_all_plugins(self):
         for name in self.get_all_active_plugin_names():
             self.deactivate_plugin(name)