Add role level tests for 'nginx' role

Introduce full role level test coverage for
'nginx' role.

Change-Id: I7c634775433a2336e43cdfc73d4698d5e2933f0e
Issue-ID: OOM-1913
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
diff --git a/ansible/roles/nginx/.yamllint b/ansible/roles/nginx/.yamllint
new file mode 100644
index 0000000..ad0be76
--- /dev/null
+++ b/ansible/roles/nginx/.yamllint
@@ -0,0 +1,11 @@
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+    level: error
+  brackets:
+    max-spaces-inside: 1
+    level: error
+  line-length: disable
+  truthy: disable
diff --git a/ansible/roles/nginx/defaults/main.yml b/ansible/roles/nginx/defaults/main.yml
index 260de9b..8bf4419 100644
--- a/ansible/roles/nginx/defaults/main.yml
+++ b/ansible/roles/nginx/defaults/main.yml
@@ -4,7 +4,7 @@
   http:
   nexus:
 all_simulated_hosts:
-    "{{ simulated_hosts.git + simulated_hosts.http + simulated_hosts.nexus }}"
+  "{{ simulated_hosts.git + simulated_hosts.http + simulated_hosts.nexus }}"
 
 nginx:
   ports:
diff --git a/ansible/roles/nginx/molecule/default/molecule.yml b/ansible/roles/nginx/molecule/default/molecule.yml
new file mode 100644
index 0000000..63c4772
--- /dev/null
+++ b/ansible/roles/nginx/molecule/default/molecule.yml
@@ -0,0 +1,30 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: docker
+lint:
+  name: yamllint
+platforms:
+  - name: infrastructure-server
+    image: molecule-${PREBUILD_PLATFORM_DISTRO:-centos}:${PREBUILD_DISTRO_VERSION:-centos7.6}
+    pre_build_image: true
+    privileged: true
+    override_command: false
+    volumes:
+      - /var/lib/docker
+    groups:
+      - infrastructure
+provisioner:
+  name: ansible
+  env:
+    ANSIBLE_ROLES_PATH: ../../../../test/roles
+  inventory:
+    links:
+      group_vars: ../../../../group_vars
+  lint:
+    name: ansible-lint
+verifier:
+  name: testinfra
+  lint:
+    name: flake8
diff --git a/ansible/roles/nginx/molecule/default/playbook.yml b/ansible/roles/nginx/molecule/default/playbook.yml
new file mode 100644
index 0000000..431bb66
--- /dev/null
+++ b/ansible/roles/nginx/molecule/default/playbook.yml
@@ -0,0 +1,5 @@
+---
+- name: Converge
+  hosts: all
+  roles:
+    - nginx
diff --git a/ansible/roles/nginx/molecule/default/prepare.yml b/ansible/roles/nginx/molecule/default/prepare.yml
new file mode 100644
index 0000000..5c6ff5d
--- /dev/null
+++ b/ansible/roles/nginx/molecule/default/prepare.yml
@@ -0,0 +1,8 @@
+---
+- name: Prepare
+  hosts: all
+  vars_files:
+    - ../../../../roles/nginx/defaults/main.yml
+  roles:
+    - prepare-docker-dind
+    - prepare-nginx