Sleep sync post delete IP address

Resolves  openbmc/openbmc-test-automation#1317

Change-Id: I8d7427a82bbddabfb3c0029e3f976c00652ec606
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/extended/test_network.robot b/extended/test_network.robot
index 6c8be37..7cbaadf 100644
--- a/extended/test_network.robot
+++ b/extended/test_network.robot
@@ -416,9 +416,12 @@
 
 Clear IP Address
     [Documentation]  Delete the IPs
-    @{ip_uri_list}=  Get IPv4 URI List
+
+    # Get the current IPv4 list post delete and sleep 10s for sync.
     :FOR  ${loc_valid_ip}  IN  @{valid_ips}
+    \  @{ip_uri_list}=  Get IPv4 URI List
     \  Delete IP And Object  ${loc_valid_ip}  @{ip_uri_list}
+    \  Sleep  10s
 
 Test Setup Execution
     [Documentation]  Network setup.