Set ssl_ca_dirs for rkt based on fact

Since systemd kubelet.service has {{ ssl_ca_dirs }}, fact should be
gathered before writing kubelet.service.

Closes: #1007
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

roles/kubernetes/node/tasks/install.yml

@@ -21,10 +21,6 @@
     path: /var/lib/kubelet
   when: kubelet_deployment_type == "rkt"
 
-- name: install | Write kubelet systemd init file
-  template: "src=kubelet.{{ kubelet_deployment_type }}.service.j2 dest=/etc/systemd/system/kubelet.service backup=yes"
-  notify: restart kubelet
-
 - name: install | Set SSL CA directories
   set_fact:
     ssl_ca_dirs: "[
@@ -39,6 +35,10 @@
     ]"
   tags: facts
 
+- name: install | Write kubelet systemd init file
+  template: "src=kubelet.{{ kubelet_deployment_type }}.service.j2 dest=/etc/systemd/system/kubelet.service backup=yes"
+  notify: restart kubelet
+
 - name: install | Install kubelet launch script
   template: src=kubelet-container.j2 dest="{{ bin_dir }}/kubelet" owner=kube mode=0755 backup=yes
   notify: restart kubelet

roles/kubernetes/node/templates/kubelet.rkt.service.j2

@@ -27,7 +27,9 @@ ExecStart=/usr/bin/rkt run \
         --volume etcd-ssl,kind=host,source={{ etcd_config_dir }},readOnly=true \
         --volume opt-cni,kind=host,source=/opt/cni,readOnly=true \
         --volume run,kind=host,source=/run,readOnly=false \
-        --volume usr-share-certs,kind=host,source=/usr/share/ca-certificates,readOnly=true \
+        {% for dir in ssl_ca_dirs -%}
+        --volume {{ dir | regex_replace('^/(.*)$', '\\1' ) | regex_replace('/', '-') }},kind=host,source={{ dir }},readOnly=true \
+        {% endfor -%}
         --volume var-lib-docker,kind=host,source={{ docker_daemon_graph }},readOnly=false \
         --volume var-lib-kubelet,kind=host,source=/var/lib/kubelet,readOnly=false \
         --volume var-log,kind=host,source=/var/log \
@@ -38,7 +40,9 @@ ExecStart=/usr/bin/rkt run \
         --mount volume=etcd-ssl,target={{ etcd_config_dir }} \
         --mount volume=opt-cni,target=/opt/cni \
         --mount volume=run,target=/run \
-        --mount volume=usr-share-certs,target=/usr/share/ca-certificates \
+        {% for dir in ssl_ca_dirs -%}
+        --mount volume={{ dir | regex_replace('^/(.*)$', '\\1' ) | regex_replace('/', '-') }},target={{ dir }} \
+        {% endfor -%}
         --mount volume=var-lib-docker,target=/var/lib/docker \
         --mount volume=var-lib-kubelet,target=/var/lib/kubelet \
         --mount volume=var-log,target=/var/log \