Replaced tocken for slack notifications on travis

.travis.yml

 sudo: required
-
 language: ruby
 cache: bundler
-
 rvm:
 - 2.5.1
-
 jobs:
   include:
   - stage: test
     name: rubocop
     script: bundle exec rubocop
     if: env(CD_TEST_IGNORE) IS NOT present
-
   - stage: test
     name: rspec
     script: gem install bundler & bundle exec rspec
     if: env(CD_TEST_IGNORE) IS NOT present
-
   - stage: build
     name: build docker image
     script: bash scripts/image_build.sh $TRAVIS_REPO_SLUG $TRAVIS_BRANCH
-      if: env(CD_BUILD_IGNORE) IS NOT present AND type NOT IN (pull_request) AND env(CD_DOCKER_USERNAME) IS present AND env(CD_DOCKER_PASSWORD) IS present
-
+    if: env(CD_BUILD_IGNORE) IS NOT present AND type NOT IN (pull_request) AND env(CD_DOCKER_USERNAME)
+      IS present AND env(CD_DOCKER_PASSWORD) IS present
 notifications:
   email: false
   slack:
-    secure: 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
+    secure: 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