use extends

gitlab-ci-includes/deb_pkg.yml

-.pkg_default_options: &pkg_default_options
+.pkg_default_options:
   image: ubuntu:latest
   only:
     - master
 
 build_deb:
+  extends: .pkg_default_options
   stage: build
   script:
     - apt-get -y update && apt-get -y install build-essential devscripts debhelper git
@@ -17,12 +18,11 @@ build_deb:
     paths:
     - debs/*.deb
     expire_in: 7 day
-  <<: *pkg_default_options
 
 deploy_deb:
+  extends: .pkg_default_options
   stage: deploy
   script:
     - apt-get -y update && apt-get install openssh-clients
     - ssh -o "StrictHostKeyChecking=no" root@mirror.ocf.co.uk "cd /var/www/html/salt/formula ; rm -rf $CI_PROJECT_NAME*.deb"
     - scp -o "StrictHostKeyChecking=no" debs/*.deb  root@mirror.ocf.co.uk:/var/www/html/salt/formula
-  <<: *pkg_default_options

gitlab-ci-includes/rpm_pkg.yml

-.pkg_default_options: &pkg_default_options
+.pkg_default_options:
   image: centos:latest
   only:
     - master
 
 build_rpm:
+  extends: .pkg_default_options
   stage: build
   script:
     - yum -y install rpm-build git
@@ -17,13 +18,12 @@ build_rpm:
     paths:
     - rpms/*.rpm
     expire_in: 7 day
-  <<: *pkg_default_options
 
 deploy_rpm:
+  extends: .pkg_default_options
   stage: deploy
   script:
     - yum -y install openssh-clients
     - ssh -o "StrictHostKeyChecking=no" root@mirror.ocf.co.uk "cd /var/www/html/salt/formula ; rm -rf $CI_PROJECT_NAME*.rpm"
     - scp -o "StrictHostKeyChecking=no" rpms/$CI_PROJECT_NAME*.rpm root@mirror.ocf.co.uk:/var/www/html/salt/formula
     - ssh -o "StrictHostKeyChecking=no" root@mirror.ocf.co.uk "cd /var/www/html/salt/formula ; createrepo ."
-  <<: *pkg_default_options

gitlab-ci-includes/spm_pkg.yml

-.pkg_default_options: &pkg_default_options
+.pkg_default_options:
   image: saltstack/centos-7-minimal
   only:
     - master
 
 build_spm:
+  extends: .pkg_default_options
   stage: build
   script:
     - export PROJ_NAME=`echo $CI_PROJECT_NAME | cut -d - -f 3-`
@@ -14,13 +15,12 @@ build_spm:
     paths:
     - spms/*.spm
     expire_in: 7 day
-  <<: *pkg_default_options
 
 deploy_spm:
+  extends: .pkg_default_options
   stage: deploy
   script:
     - export PROJ_NAME=`echo $CI_PROJECT_NAME | cut -d - -f 3-`
     - ssh -o "StrictHostKeyChecking=no" root@mirror.ocf.co.uk "cd /var/www/html/salt/formula ; rm -rf $PROJ_NAME*.spm"
     - scp -o "StrictHostKeyChecking=no" spms/$PROJ_NAME*.spm root@mirror.ocf.co.uk:/var/www/html/salt/formula
     - ssh -o "StrictHostKeyChecking=no" root@mirror.ocf.co.uk "cd /var/www/html/salt/formula ; spm create_repo ."
-  <<: *pkg_default_options