[scheduler] Run it on go116 runtime in compatibility mode.

To verify it works (including the deployment pipeline).

R=iannucci@chromium.org

Change-Id: Ie907db67d37035fb7b8517b2b2f2d1feb65aa0f0
Reviewed-on: https://chromium-review.googlesource.com/c/infra/luci/luci-go/+/3651088
Commit-Queue: Vadim Shtayura <vadimsh@chromium.org>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
diff --git a/scheduler/appengine/frontend/app.yaml b/scheduler/appengine/frontend/app.yaml
index fc265df..45cabd0 100644
--- a/scheduler/appengine/frontend/app.yaml
+++ b/scheduler/appengine/frontend/app.yaml
@@ -1,5 +1,6 @@
 service: default
-runtime: go111
+runtime: go116
+app_engine_apis: true
 
 instance_class: F4_1G
 automatic_scaling:
diff --git a/scheduler/appengine/static/service-static.yaml b/scheduler/appengine/static/service-static.yaml
index 29b3752..a66b057 100644
--- a/scheduler/appengine/static/service-static.yaml
+++ b/scheduler/appengine/static/service-static.yaml
@@ -1,5 +1,6 @@
 service: static
-runtime: go111
+runtime: go116
+app_engine_apis: true
 
 handlers:
 - url: /static/bootstrap