Add releaseUrl to message context (resolves #1038)

README.md

@@ -252,6 +252,7 @@ changelog
 name
 repo.remote, repo.protocol, repo.host, repo.owner, repo.repository, repo.project
 branchName
+releaseUrl
 ```
 
 All variables are available in all hooks. The only exception is that the additional variables listed above are not yet

lib/plugin/github/GitHub.js

@@ -248,6 +248,7 @@ class GitHub extends Release {
         this.debug(response.data);
         const { html_url, upload_url, id } = response.data;
         this.setContext({ isReleased: true, releaseId: id, releaseUrl: html_url, upload_url });
+        this.config.setContext({ isReleased: true, releaseId: id, releaseUrl: html_url, upload_url });
         this.log.verbose(`octokit repos.createRelease: done (${response.headers.location})`);
         return response.data;
       } catch (err) {

lib/plugin/gitlab/GitLab.js

@@ -219,6 +219,7 @@ class GitLab extends Release {
       await this.request(endpoint, options);
       this.log.verbose('gitlab releases#createRelease: done');
       this.setContext({ isReleased: true, releaseUrl });
+      this.config.setContext({ isReleased: true, releaseUrl });
       return true;
     } catch (err) {
       this.debug(err);