Merge branch 'feature/add-serial' into 'master'

Add common serial port incantations

See merge request arm-research/smarter/smarter-device-manager!6

conf.yaml

@@ -16,3 +16,11 @@
   nummaxdevices: 20
 - devicematch: ^vcsm.*$
   nummaxdevices: 20
+- devicematch: ^ttyUSB[0-9]*$
+  nummaxdevices: 1
+- devicematch: ^ttyACM[0-9]*$
+  nummaxdevices: 1
+- devicematch: ^ttyTHS[0-9]*$
+  nummaxdevices: 1
+- devicematch: ^ttyS[0-9]*$
+  nummaxdevices: 1