FAIL01 test: read the RAM quota in Openstack

Now the test sets the memory of VDU with the amount of memory obtained from the Openstack quota.

Change-Id: Id3efc8caee01092e4aeb3b83588b91a096d03a34
Signed-off-by: aguilard <e.dah.tid@telefonica.com>
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/robot-systest/lib/openstack_lib.robot b/robot-systest/lib/openstack_lib.robot
index cd03eb8..c72892e 100644
--- a/robot-systest/lib/openstack_lib.robot
+++ b/robot-systest/lib/openstack_lib.robot
@@ -46,3 +46,15 @@
     @{servers} =  Split String  ${stdout}
     ${n_servers}=  Get Length  ${servers}
     Should Be Equal As Integers   ${number}   ${n_servers}
+
+
+Get Project Quota
+    [Documentation]     Get a field (ram, cores, ports, etc.) from quota in current project.
+    [Arguments]   ${field}
+
+    Should Not Be Empty   ${field}
+    ${rc}   ${stdout}=   Run and Return RC and Output   openstack quota show -c ${field} -f value
+    log   ${stdout}
+    Should Be Equal As Integers   ${rc}   ${success_return_code}
+    [Return]  ${stdout}
+