These are the perf counters added in commit 263dfba6ee.
Note: This relies on 'neon' extension version 1.5. The default was
bumped to 1.5 in commit d696c41807.
---------
Co-authored-by: Matthias van de Meent <matthias@neon.tech>
Instead of adding them to the VM image late in the build process, when
putting together the final VM image, include them in the earlier
compute image already. That makes it more convenient to edit the
files, and to test them.
