playbook/ors: don't remove ifupdown with package role

Otherwise if playbook stops after removing ifupdown
then the ORS becomes unreachable because ors-image-backports
playbook might not get executed properly to configure
systemd-networkd

playbook/roles/ors-image-backports/meta/main.yml

----
-dependencies:
-  - { role: package, package_name: ifupdown, package_state: absent  }

playbook/roles/ors/meta/main.yml

@@ -6,3 +6,5 @@ dependencies:
   - { role: package, package_name: iptables-persistent, package_state: present  }
   - { role: package, package_name: iptables, package_state: present  }
   - { role: package, package_name: curl, package_state: present  }
+  - { role: package, package_name: sudo, package_state: present  }
+  - { role: package, package_name: libsctp-dev, package_state: present  }

playbook/sha256sum

-bc63e494fbfcc644fa19d6665f3448f024e7721f6d93600e5765a7eabdb6cda8  -
+19310c6a48feace42334ee3a956be1934a32cecc2411063aedc8445bef0fc599  -