feat: add feature flag for team creation (#12)

* feat: add feature flag for team creation

Current behaviour creates a secret team if a team doesn't exist. This
adds a feature flag to prevent creating teams unless the feature flag is
set

* fixup! feat: add feature flag for team creation

lib/env.js

@@ -5,5 +5,7 @@ module.exports = {
   DEPLOYMENT_CONFIG_FILE: process.env.DEPLOYMENT_CONFIG_FILE || 'deployment-settings.yml',
   CREATE_PR_COMMENT: process.env.CREATE_PR_COMMENT || 'true',
   CREATE_ERROR_ISSUE: process.env.CREATE_ERROR_ISSUE || 'true',
-  BLOCK_REPO_RENAME_BY_HUMAN: process.env.BLOCK_REPO_RENAME_BY_HUMAN || 'false'
+  BLOCK_REPO_RENAME_BY_HUMAN: process.env.BLOCK_REPO_RENAME_BY_HUMAN || 'false',
+  // If set to true, then when a team is defined in the settings file, it will be created if it does not exist.
+  FEATURE_CREATE_TEAMS_IF_NOT_EXIST: process.env.FEATURE_CREATE_TEAMS_IF_NOT_EXIST || 'false'
 }

lib/plugins/teams.js

@@ -1,5 +1,6 @@
 const Diffable = require('./diffable')
 const NopCommand = require('../nopcommand')
+const env = require('../env')
 
 const teamRepoEndpoint = '/orgs/:owner/teams/:team_slug/repos/:owner/:repo'
 module.exports = class Teams extends Diffable {
@@ -43,6 +44,10 @@ module.exports = class Teams extends Diffable {
       })
     }).catch(e => {
       if (e.status === 404) {
+        if (env.FEATURE_CREATE_TEAMS_IF_NOT_EXIST == 'false') {
+          this.log.info(`Feature to create teams is disabled. Team ${attrs.name} not found`)
+          return
+        }
         const createParam = {
           org: this.repo.owner,
           name: attrs.name