CI: sign plugin during release (#1039)

* Add grafana toolkit package

* CI: skip adding binaries to release branch

* CI: test signing plugin

* CI: skip branch build for test releases

* CI: do not use ssh key for fetching

* CI: get plugin in a separate image to avoid git LFS error

* CI: fix attaching workspace

* CI: fix attaching dir

* CI: adjust release process

* CI: clean up

.circleci/github/publishRelease.js

@@ -82,7 +82,7 @@ async function main() {
 
   try {
     await publishAssets(
-      `grafana-zabbix-${releaseVersion}.zip`,
+      `alexanderzobnin-zabbix-app-${releaseVersion}.zip`,
       `https://uploads.github.com/repos/${GRAFANA_ZABBIX_OWNER}/${GRAFANA_ZABBIX_REPO}/releases/${releaseId}/assets`
     );
   } catch (reason) {