Propagate plugin execution dir to CreatePlugin (#2183)

* fix: Propagate plugin options to CreatePlugin

Plugin options were previously only applied to the
BuildPluginMap call, resulting in the plugin
execution_dir variable being ineffective.

Also add a test to verify functionality

* fix: Support plugin execution_dir for all plugins

Previously, only external host plugins would respect
the plugin execution dir. Now, all uses of the embedded
plugins respect the configuration.

sdk/plugins/host/load.go

@@ -60,7 +60,7 @@ func CreateHostPlugin(
 	}
 
 	// Create the plugin and cleanup func
-	plugClient, cleanup, err := pluginutil.CreatePlugin(pluginMap[pluginType])
+	plugClient, cleanup, err := pluginutil.CreatePlugin(pluginMap[pluginType], opts.withPluginOptions...)
 	if err != nil {
 		return nil, cleanup, err
 	}