Fix network restart

Restart network breaks ansible ssh workers.
Fire and forget async network restart and wait for it.
Add update resolvconf to the network restart handler to
ensure changes applied to the /etc/resolv.conf.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

roles/dnsmasq/handlers/main.yml

@@ -1,4 +1,14 @@
 - name: Dnsmasq | restart network
+  command: /bin/true
+  notify:
+    - Dnsmasq | reload network
+    - Dnsmasq | Wait for network reloaded
+    - Dnsmasq | update resolvconf
+  when: ansible_os_family != "CoreOS"
+
+- name: Dnsmasq | reload network
+  vars:
+    ansible_ssh_pipelining: yes
   service:
     name: >-
       {% if ansible_os_family == "RedHat" -%}
@@ -7,4 +17,19 @@
       networking
       {%- endif %}
     state: restarted
-  when: ansible_os_family != "CoreOS"
+  register: network_runner
+  async: 600
+  poll: 0
+
+- name: Dnsmasq | Wait for network reloaded
+  vars:
+    ansible_ssh_pipelining: yes
+  async_status: jid={{ network_runner.ansible_job_id }}
+  register: network_jobs
+  until: network_jobs.finished
+  retries: 60
+  delay: 10
+
+- name: Dnsmasq | update resolvconf
+  command: /sbin/resolvconf -u
+  ignore_errors: true