Revert "remove duplicate travis tests"

This reverts commit 77ae969.

.travis.yml

@@ -54,6 +54,41 @@ env:
   #    run_opts: "--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
   #    test_playbook: test.yml
 
+  - distro: centos6
+    version: latest
+    init: /sbin/init
+    test_playbook: official-nginx-role-redhat.yml
+
+  - distro: centos7
+    init: /lib/systemd/systemd
+    container_id: $(mktemp)
+    run_opts: "--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+    version: latest
+    test_playbook: official-nginx-role-redhat.yml
+
+  - distro: oracle6
+    version: latest
+    init: /sbin/init
+    test_playbook: official-nginx-role-redhat.yml
+
+  - distro: ubuntu1604
+    version: latest
+    init: /lib/systemd/systemd
+    run_opts: "--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+    test_playbook: official-nginx-role-debian.yml
+
+  - distro: ubuntu1804
+    version: latest
+    init: /lib/systemd/systemd
+    run_opts: "--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+    test_playbook: official-nginx-role-debian.yml
+
+  - distro: debian9
+    version: latest
+    init: /lib/systemd/systemd
+    run_opts: "--privileged --volume=/sys/fs/cgroup:/sys/fs/cgroup:ro"
+    test_playbook: official-nginx-role-debian.yml
+
 before_install:
   # Pull container
   - 'docker pull rndmh3ro/docker-${distro}-ansible:${version}'