fixed nfs export issue with ubuntu

Former-commit-id: a11f6ac9

roles/nfs-server/tasks/startServer.yml

@@ -29,7 +29,15 @@
   become: true
   when: ansible_os_family == "RedHat"  and ansible_distribution_major_version == "7"
 
+- name: "Run exportfs"
+  command: /usr/sbin/exportfs -a
+  become: true
+  when: ansible_os_family == "Debian"
+
 - name: "Start the Server"
   service: "name=nfs-kernel-server state=started enabled=true"
   become: true
   when: ansible_os_family == "Debian"
+
+
+