Fix TPU CI (#12419)

.circleci/config.yml

@@ -116,7 +116,7 @@ jobs:
     docker:
       - image: circleci/python:3.7
     environment:
-      - XLA_VER: 1.8
+      - XLA_VER: 1.9
       - PYTHON_VER: 3.7
       - MAX_CHECKS: 240
       - CHECK_SPEEP: 5

dockers/tpu-tests/tpu_test_cases.jsonnet

@@ -8,7 +8,7 @@ local tputests = base.BaseTest {
   mode: 'postsubmit',
   configMaps: [],
 
-  timeout: 900, # 15 minutes, in seconds.
+  timeout: 1200, # 20 minutes, in seconds.
 
   image: 'pytorchlightning/pytorch_lightning',
   imageTag: 'base-xla-py{PYTHON_VERSION}-torch{PYTORCH_VERSION}',