minor: add Ubuntu 16.04 to evergreen matrix (#442)

patrickfreed · web-flow · commit 1c2fa76b4a04 · 2020-04-03T15:25:14.000-04:00
diff --git a/.evergreen/config.yml b/.evergreen/config.yml
@@ -404,6 +404,10 @@ axes:
         display_name: "Ubuntu 18.04"
         run_on: ubuntu1804-test
 
+      - id: ubuntu-16.04
+        display_name: "Ubuntu 16.04"
+        run_on: ubuntu1604-test
+
       - id: macos-1014
         display_name: "macOS 10.14"
         run_on: macos-1014
