bump terratest to version supporting go modules

Author: yorinasub17

.circleci/config.yml

@@ -1,13 +1,13 @@
 defaults: &defaults
   machine: true
   environment:
-    GRUNTWORK_INSTALLER_VERSION: v0.0.21
+    GRUNTWORK_INSTALLER_VERSION: v0.0.25
     TERRATEST_LOG_PARSER_VERSION: v0.13.24
-    MODULE_CI_VERSION: v0.13.3
-    TERRAFORM_VERSION: 0.12.2
+    MODULE_CI_VERSION: v0.18.4
+    TERRAFORM_VERSION: 0.12.23
     TERRAGRUNT_VERSION: NONE
     PACKER_VERSION: NONE
-    GOLANG_VERSION: 1.11.2
+    GOLANG_VERSION: 1.13.8
 
 install_gruntwork_utils: &install_gruntwork_utils
   name: install gruntwork utils
@@ -16,32 +16,20 @@ install_gruntwork_utils: &install_gruntwork_utils
     gruntwork-install --module-name "gruntwork-module-circleci-helpers" --repo "https://github.com/gruntwork-io/module-ci" --tag "${MODULE_CI_VERSION}"
     gruntwork-install --binary-name "terratest_log_parser" --repo "https://github.com/gruntwork-io/terratest" --tag "${TERRATEST_LOG_PARSER_VERSION}"
     configure-environment-for-gruntwork-module \
-      --circle-ci-2-machine-executor \
       --terraform-version ${TERRAFORM_VERSION} \
       --terragrunt-version ${TERRAGRUNT_VERSION} \
       --packer-version ${PACKER_VERSION} \
-      --use-go-dep \
-      --go-version ${GOLANG_VERSION} \
-      --go-src-path test
+      --go-version ${GOLANG_VERSION}
 version: 2
 jobs:
   build:
     <<: *defaults
     steps:
       - checkout
-      - restore_cache:
-          keys:
-            - dep-v1-{{ checksum "test/Gopkg.lock" }}
-
       # Install gruntwork utilities
       - run:
           <<: *install_gruntwork_utils
 
-      - save_cache:
-          key: dep-v1-{{ checksum "test/Gopkg.lock" }}
-          paths:
-            - ./test/vendor
-
       # Fail the build if the pre-commit hooks don't pass. Note: if you run pre-commit install locally, these hooks will
       # execute automatically every time before you commit, ensuring the build never fails at this step!
       - run: pip install pre-commit==1.11.2 cfgv==2.0.1 yapf