improve zfs support on ubuntu

roles/zfs/tasks/main.yml

@@ -23,6 +23,15 @@
     state: present
   when: ansible_distribution in ["Fedora"] and not is_atomic
 
+- name: install zfs utils (Ubuntu)
+  package:
+    name: "{{ item }}"
+    state: present
+  with_items:
+    - zfsutils-linux
+    - zfs-initramfs
+  when: ansible_distribution in ["Ubuntu"]
+
 - name: install zfs and dkms
   package:
     name: "{{ item }}"
@@ -33,7 +42,7 @@
   - dkms
   - zfs
   register: zfs_installed
-  when: not is_atomic
+  when: ansible_distribution in ["CentOS" , "Red Hat Enterprise Linux", "Fedora" ] and not is_atomic
 
 - name: load zfs module
   modprobe: