Increased the amount of VDU memory in fail01 test

Change-Id: I0edb6eadffa233df8db7ac71dc39b67ab4a7162d
Signed-off-by: aguilard <e.dah.tid@telefonica.com>
(cherry picked from commit 058d12fd9d0f2b7dc53b17b0fc9838894d75a1ba)
diff --git a/robot-systest/testsuite/fail_01-insufficient_resources.robot b/robot-systest/testsuite/fail_01-insufficient_resources.robot
index b89f861..cd3caef 100644
--- a/robot-systest/testsuite/fail_01-insufficient_resources.robot
+++ b/robot-systest/testsuite/fail_01-insufficient_resources.robot
@@ -43,7 +43,7 @@
 ${publickey}   %{HOME}/.ssh/id_rsa.pub
 
 # Default memory for dataVM VDU (can be overwritten by VM_MEMORY_OVERRIDE environment variable)
-${default_memory}   100
+${default_memory}   200
 
 # NS launch timeout and polling time
 ${ns_launch_max_wait_time}   5min