Updated systemd networkd role to fix hangs

Sometime systems will hang when executing many systemd options at the
same time. This change breaks up the systemd enabled/start/daemon_reload
tasks so that we're only enabling and starting when "systemd_run_networkd"
is set to true.

Change-Id: I3572337edc87b5753f9d4a9b480fdba76e98e8ef
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

tasks/main.yml

@@ -123,11 +123,26 @@
   tags:
     - systemd-networkd
 
-- name: Set systemd-networkd service state
+- name: Reload systemd daemon
   systemd:
-    name: "systemd-networkd"
     daemon_reload: yes
-    enabled: "{{ (systemd_run_networkd | bool) | ternary('yes', 'no') }}"
+  tags:
-    state: "{{ (systemd_run_networkd | bool) | ternary('started', 'stopped') }}"
+    - systemd-networkd
+
+- name: Enable systemd-networkd
+  systemd:
+    name: "systemd-networkd"
+    enabled: "yes"
+  when:
+    - systemd_run_networkd | bool
+  tags:
+    - systemd-networkd
+
+- name: Start systemd daemon
+  systemd:
+    name: "systemd-networkd"
+    state: "started"
+  when:
+    - systemd_run_networkd | bool
   tags:
     - systemd-networkd