Update tflint to 0.8.2 for circleci task (#280)

.circleci/config.yml

@@ -24,7 +24,7 @@ jobs:
           command: if [[ -n "$(terraform fmt -write=false)" ]]; then echo "Some terraform files need be formatted, run 'terraform fmt' to fix"; exit 1; fi
       - run:
           name: Install tflint
-          command: curl -L -o /tmp/tflint.zip https://github.com/wata727/tflint/releases/download/v0.4.2/tflint_linux_amd64.zip && unzip /tmp/tflint.zip -d /usr/local/bin
+          command: curl -L -o /tmp/tflint.zip https://github.com/wata727/tflint/releases/download/v0.8.2/tflint_linux_amd64.zip && unzip /tmp/tflint.zip -d /usr/local/bin
       - run:
           name: Check Terraform configurations with tflint
           command: tflint