Move bundle install to specific jobs

The `bundle install` call in the default
specification broke the security related jobs as
bundler is not available in the Docker image for
these jobs.

.gitlab-ci.yml

+include:
+  - template: Security/DAST.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/DAST.gitlab-ci.yml
+  - template: Security/Container-Scanning.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/Container-Scanning.gitlab-ci.yml
+  - template: Security/Dependency-Scanning.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/Dependency-Scanning.gitlab-ci.yml
+  - template: Security/License-Scanning.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/License-Scanning.gitlab-ci.yml
+  - template: Security/SAST.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/SAST.gitlab-ci.yml
+  - template: Security/Secret-Detection.gitlab-ci.yml # https://gitlab.com/gitlab-org/gitlab-foss/-/blob/master/lib/gitlab/ci/templates/Security/Secret-Detection.gitlab-ci.yml
+
 default:
   image: "ruby:2.3"
-  before_script:
-    - git config --global user.email "bot@gitlab.com"
-    - git config --global user.name "Bot User"
-    - bundle install -j $(nproc) --path vendor
   cache:
     paths:
       - vendor
   tags:
     - gitlab-org
 
+.before_scripts: &before_scripts
+  - git config --global user.email "bot@gitlab.com"
+  - git config --global user.name "Bot User"
+  - bundle install -j $(nproc) --path vendor
+
 workflow:
-  rules:
+  rules: &workflow_rules
     # For merge requests, create a pipeline.
     - if: '$CI_MERGE_REQUEST_IID'
     # For `master` branch, create a pipeline (this includes on schedules, pushes, merges, etc.).
@@ -22,15 +31,18 @@ workflow:
 rspec:
   script:
     - bundle exec rspec spec -f d -c
+  before_script: *before_scripts
 
 rubocop:
   script:
     - bundle exec rubocop
+  before_script: *before_scripts
 
-include:
-  - template: Security/DAST.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/DAST.gitlab-ci.yml
-  - template: Security/Container-Scanning.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/Container-Scanning.gitlab-ci.yml
-  - template: Security/Dependency-Scanning.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/Dependency-Scanning.gitlab-ci.yml
-  - template: Security/License-Scanning.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/License-Scanning.gitlab-ci.yml
-  - template: Security/SAST.gitlab-ci.yml  # https://gitlab.com/gitlab-org/gitlab-foss/blob/master/lib/gitlab/ci/templates/Security/SAST.gitlab-ci.yml
+license_scanning:
+  rules: *workflow_rules
+
+gemnasium-dependency_scanning:
+  rules: *workflow_rules
 
+secret_detection:
+  rules: *workflow_rules