Allowing 10% under the limit for TCP/UDP tests

Change-Id: Ic92ea5225cfbb8d0d0bbfd8f1e606295aeb02731
diff --git a/tests/dt-workflow/Voltha_DT_PODTests.robot b/tests/dt-workflow/Voltha_DT_PODTests.robot
index 009b269..19109d8 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 10% 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..775046c 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 10% under the limit
 ${udp_rate_multiplier}   1.10    # Send UDP at bw profile limit * rate_multiplier
 ${udp_packet_bytes}      1470    # UDP payload in bytes