Revert "reduce things done in ubuntu-18.04.yml"

This reverts commit 6be624d.

Author: bmoffatt

ci/codebuild/ubuntu-18.04.yml

@@ -8,7 +8,8 @@ phases:
   build:
     commands:
       - echo Build started on `date`
-      - ci/codebuild/build.sh -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DENABLE_TESTS=ON -DTEST_RESOURCE_PREFIX=ubuntu1804
+      - ci/codebuild/build.sh -DCMAKE_CXX_CLANG_TIDY=clang-tidy -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DENABLE_TESTS=ON -DTEST_RESOURCE_PREFIX=ubuntu1804
+      - ci/codebuild/format-check.sh
       - ci/codebuild/run-tests.sh  aws-lambda-package-lambda-test-fun ubuntu1804
   post_build:
     commands: