increasing time limit on bbsim dhcp tests

Change-Id: I50c8aacd2a70fc0f30615eba65c28e345a865142
diff --git a/src/test/cord-api/Tests/WorkflowValidations/BBSIM.robot b/src/test/cord-api/Tests/WorkflowValidations/BBSIM.robot
index c258fc2..829a624 100644
--- a/src/test/cord-api/Tests/WorkflowValidations/BBSIM.robot
+++ b/src/test/cord-api/Tests/WorkflowValidations/BBSIM.robot
@@ -51,7 +51,7 @@
     [Tags]    serviceinstances
     : FOR    ${onu}    IN    @{serial_numbers}
     \    Wait Until Keyword Succeeds    180s    2s    Validate ATT Workflow Driver SI    ENABLED    APPROVED    ${onu}
-    \    Wait Until Keyword Succeeds    240s    2s    Validate ATT Workflow Driver SI DHCP State    DHCPACK    ${onu}
+    \    Wait Until Keyword Succeeds    360s    5s    Validate ATT Workflow Driver SI DHCP State    DHCPACK    ${onu}
 
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