fixed the yamllint errors

Author: vinthedark

.circleci/config.yml

@@ -1,3 +1,4 @@
+---
 # Python CircleCI 2.0 configuration file
 #
 # Check https://circleci.com/docs/2.0/language-python/ for more details
@@ -7,45 +8,44 @@ jobs:
   build:
   docker:
     - image: circleci/mysql:5.7
-    working_directory: /root/singnet
-    environment:
-      PYTHONPATH: /root/singnet/snet-platform-usage
-    steps:
-      - checkout
-      - restore_cache:
-          keys:
-            - v1-dependencies-{{ checksum "metering/requirements.txt" }}
-            # fallback to using the latest cache if no exact match is found
-            - v1-dependencies-
-      - run:
-          name: Install Python and Git
-          command: |
-            mysql --version
-            service mysql start
-            apt-get update
-            apt-get -y install sudo wget git
-            apt-get -y install python3 python3-pip
-      - run:
-          name: install dependencies
-          command: |
-            python3 -m venv venv
-            . venv/bin/activate
-            pip install -r metering/requirements.txt
-
-      - save_cache:
-          paths:
-            - ./venv
-          key: v1-dependencies-{{ checksum "requirements.txt" }}
-      # run tests!
-      # this example uses Django's built-in test-runner
-      # other common Python testing frameworks include pytest and nose
-      # https://pytest.org
-      # https://nose.readthedocs.io
-      - run:
-          name: run tests
-          command: |
-            . venv/bin/activate
-            python metering/tests/test_total_calls.py test
-      - store_artifacts:
-          path: test-reports
-          destination: test-reports
+  working_directory: /root/singnet
+  environment:
+    PYTHONPATH: /root/singnet/snet-platform-usage
+  steps:
+    - checkout
+    - restore_cache:
+        keys:
+          - v1-dependencies-{{ checksum "metering/requirements.txt" }}
+          # fallback to using the latest cache if no exact match is found
+          - v1-dependencies-
+    - run:
+        name: Install Python and Git
+        command: |
+          mysql --version
+          service mysql start
+          apt-get update
+          apt-get -y install sudo wget git
+          apt-get -y install python3 python3-pip
+    - run:
+        name: install dependencies
+        command: |
+          python3 -m venv venv
+          . venv/bin/activate
+          pip install -r metering/requirements.txt
+    - save_cache:
+        paths:
+          - ./venv
+        key: v1-dependencies-{{ checksum "requirements.txt" }}
+    # run tests!
+    # this example uses Django's built-in test-runner
+    # other common Python testing frameworks include pytest and nose
+    # https://pytest.org
+    # https://nose.readthedocs.io
+    - run:
+        name: run tests
+        command: |
+          . venv/bin/activate
+          python metering/tests/test_total_calls.py test
+    - store_artifacts:
+        path: test-reports
+        destination: test-reports