Syncronize mbed-ls minimum version with icetea requirements

Olli-Pekka Puolitaival · Cruz Monrreal II · commit ded64729f7f5 · 2018-09-17T21:42:55.000-05:00
diff --git a/requirements.txt b/requirements.txt
@@ -6,7 +6,7 @@ IntelHex>=1.3
 junit-xml
 pyYAML
 requests
-mbed-ls>=1.4.2,==1.*
+mbed-ls>=1.5.1,==1.*
 mbed-host-tests>=1.1.2
 mbed-greentea>=0.2.24
 beautifulsoup4>=4
