Create a fresh copy of the base repository config

Signed-off-by: Kyle Harding <kyle@balena.io>

Author: klutchell

lib/settings.js

@@ -298,9 +298,10 @@ ${this.results.reduce((x, y) => {
 
   async updateRepos(repo) {
     this.subOrgConfigs = this.subOrgConfigs || await this.getSubOrgConfigs()
-    let repoConfig = this.config.repository
+    // Create a fresh copy of the base repository config
+    let repoConfig = this.config.repository ? Object.assign({}, this.config.repository) : {}
     if (repoConfig) {
-      repoConfig = Object.assign(repoConfig, { name: repo.repo, org: repo.owner })
+      repoConfig = Object.assign({}, repoConfig, { name: repo.repo, org: repo.owner })
     }
 
     const subOrgConfig = this.getSubOrgConfig(repo.repo)
@@ -791,7 +792,7 @@ ${this.results.reduce((x, y) => {
           }
           )) {
             delete subOrgConfigs[key]
-          } 
+          }
         }
       }
       return subOrgConfigs
@@ -862,7 +863,7 @@ ${this.results.reduce((x, y) => {
     if (this.nop) {
       //Remove nulls and undefined from the results
       const results = res.flat(3).filter(r => r)
-      
+
       this.results = this.results.concat(results)
     }
   }