Do full performance testing on the main node listing before and after it is converted to a view

Part of meta issue #1805996: [META] Views in Drupal Core. Work on this issue is done in the VDC sandbox:

git clone --recursive --branch vdc http://git.drupal.org/sandbox/tim.plunkett/1799554.git vdc

Problem/Motivation

• To add Views to core, we need to ensure it does not cause performance regressions.
• The "promoted" node listing at /node is typically a high-traffic page, and it will be the first core listing converted to Views.

Proposed resolution

The /node listing conversion needs full performance testing. Reference: http://drupal.org/core-gates#performance

1. Install two copies of core (one from 8.x HEAD, and one from the VDC sandbox).
2. Manually test the main /node listing in the plain 8.x installation.
3. Switch to the VDC sandbox installation. Be sure to enable the Views and Views UI modules (necessary until they are added to the standard profile), and test the listing after it is converted to a view, as above.

Remaining tasks

• This issue is postponed on #1806334: Replace the node listing at /node with a view.

API changes

• TBD