test(@angular/cli): add ng add e2e tests to yarn subset

Author: alan-agius4

.circleci/config.yml

@@ -202,7 +202,7 @@ jobs:
           name: Execute CLI E2E Tests Subset with Yarn
           command: |
             mkdir /mnt/ramdisk/e2e-yarn
-            PATH=~/.npm-global/bin:$PATH node ./tests/legacy-cli/run_e2e --nb-shards=${CIRCLE_NODE_TOTAL} --shard=${CIRCLE_NODE_INDEX} <<# parameters.ve >>--ve<</ parameters.ve >> <<# parameters.snapshots >>--ng-snapshots<</ parameters.snapshots >> --yarn --tmpdir=/mnt/ramdisk/e2e-yarn --glob="{tests/basic/**,tests/update/**}"
+            PATH=~/.npm-global/bin:$PATH node ./tests/legacy-cli/run_e2e --nb-shards=${CIRCLE_NODE_TOTAL} --shard=${CIRCLE_NODE_INDEX} <<# parameters.ve >>--ve<</ parameters.ve >> <<# parameters.snapshots >>--ng-snapshots<</ parameters.snapshots >> --yarn --tmpdir=/mnt/ramdisk/e2e-yarn --glob="{tests/basic/**,tests/update/**,tests/commands/add/**}"
 
   e2e-cli-node-10:
     executor: