support: add route to repair apps

src/apps.js

@@ -83,6 +83,7 @@ exports = module.exports = {
 
     restoreApps,
     configureApps,
+    repairApps,
     schedulePendingTasks,
     restartAppsUsingAddons,
 
@@ -2197,6 +2198,17 @@ async function repair(app, data, auditSource) {
     return { taskId };
 }
 
+async function repairApps(auditSource) {
+    assert.strictEqual(typeof auditSource, 'object');
+
+    const apps = await list();
+
+    for (const app of apps) {
+        if (app.installationState !== exports.ISTATE_ERROR) continue;
+        await repair(app, { /* data */}, auditSource);
+    }
+}
+
 async function restore(app, backupId, auditSource) {
     assert.strictEqual(typeof app, 'object');
     assert.strictEqual(typeof backupId, 'string');