Add molecule tests for rke role

This change adds molecule tests for the rke role, and
modifies the rke role itself to be more idempotent/to
pass linter.
Note that this molecule test case uses a separate
role to install docker in containers, that runs
docker daemon inside of them instead of using host docker.

Issue-ID: OOM-1778
Change-Id: I875f3ff2ab961e5428acee5a02287a8d2d6e9969
Signed-off-by: Michal Zegan <m.zegan@samsung.com>

4 files changed, 29 insertions, 0 deletions

diff --git a/ansible/test/roles/prepare-rke/defaults/main.yml b/ansible/test/roles/prepare-rke/defaults/main.yml
new file mode 100644
index 00000000..2cf85635
--- /dev/null
+++ b/ansible/test/roles/prepare-rke/defaults/main.yml
@@ -0,0 +1,5 @@
+---
+#The rke version.
+rke_version: 0.2.0
+#The kubectl version.
+kubectl_version: 1.13.5
diff --git a/ansible/test/roles/prepare-rke/tasks/all.yml b/ansible/test/roles/prepare-rke/tasks/all.yml
new file mode 100644
index 00000000..d4b67c1f
--- /dev/null
+++ b/ansible/test/roles/prepare-rke/tasks/all.yml
@@ -0,0 +1,6 @@
+#This is needed because login from non root is blocked by default.
+- name: "Allow non root logins"
+  service:
+    name: systemd-user-sessions
+    state: started
+
diff --git a/ansible/test/roles/prepare-rke/tasks/infra.yml b/ansible/test/roles/prepare-rke/tasks/infra.yml
new file mode 100644
index 00000000..55ab7f16
--- /dev/null
+++ b/ansible/test/roles/prepare-rke/tasks/infra.yml
@@ -0,0 +1,16 @@
+---
+- name: "Ensure {{ app_data_path }} exists"
+  file:
+    path: "{{ app_data_path }}/downloads"
+    state: directory
+
+- name: "Install rke-{{ rke_version }}"
+  get_url:
+    url: "https://github.com/rancher/rke/releases/download/v{{ rke_version }}/rke_linux-amd64"
+    dest: "{{ app_data_path }}/downloads/rke"
+
+- name: "Install kubectl-{{ kubectl_version }}"
+  get_url:
+    url: "https://storage.googleapis.com/kubernetes-release/release/v{{ kubectl_version }}/bin/linux/amd64/kubectl"
+    dest: "/usr/local/bin/kubectl"
+    mode: 0755
diff --git a/ansible/test/roles/prepare-rke/tasks/main.yml b/ansible/test/roles/prepare-rke/tasks/main.yml
new file mode 100644
index 00000000..210c9b57
--- /dev/null
+++ b/ansible/test/roles/prepare-rke/tasks/main.yml
@@ -0,0 +1,2 @@
+---
+- include_tasks: "{{ mode }}.yml"