Revert "Avoid config generation race."
Revert "Avoid config generation race."

This reverts commit 108cca8c1db30649de2bcf2372b9c24d698af311.

vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa