Fixes required for dataplane tests

Change-Id: I7db5a71ecf37a13dcb6dfe689c6c434ad4ec52c7
diff --git a/tests/dt-workflow/Voltha_DT_PODTests.robot b/tests/dt-workflow/Voltha_DT_PODTests.robot
index 009b269..ec37d61 100644
--- a/tests/dt-workflow/Voltha_DT_PODTests.robot
+++ b/tests/dt-workflow/Voltha_DT_PODTests.robot
@@ -56,7 +56,7 @@
 
 # For dataplane bandwidth testing
 ${upper_margin_pct}      105     # Allow 5% over the limit
-${lower_margin_pct}      92      # Allow 8% under the limit
+${lower_margin_pct}      90      # Allow 8% under the limit
 ${udp_rate_multiplier}   1.10    # Send UDP at bw profile limit * rate_multiplier
 ${udp_packet_bytes}      1470    # UDP payload in bytes
 
diff --git a/tests/functional/Voltha_PODTests.robot b/tests/functional/Voltha_PODTests.robot
index a8e3a25..f352bd0 100644
--- a/tests/functional/Voltha_PODTests.robot
+++ b/tests/functional/Voltha_PODTests.robot
@@ -56,7 +56,7 @@
 
 # For dataplane bandwidth testing
 ${upper_margin_pct}      105     # Allow 5% over the limit
-${lower_margin_pct}      92      # Allow 8% under the limit
+${lower_margin_pct}      90      # Allow 8% under the limit
 ${udp_rate_multiplier}   1.10    # Send UDP at bw profile limit * rate_multiplier
 ${udp_packet_bytes}      1470    # UDP payload in bytes