[FIX] ansible_lsb is empty on some systems

templates/telegraf.conf.j2

@@ -75,7 +75,7 @@
 #   ## If true, a field name like 'temp1_input' will be changed to 'temp_input'.
 #   # remove_numbers = true
 
-{% if ansible_lsb.id == "Raspbian" %}
+{% if ansible_lsb.id is defined and ansible_lsb.id == "Raspbian" %}
 # On Raspbian, get CPU temperature (in millicelsius)
 [[inputs.exec]]
   commands = ["cat /sys/class/thermal/thermal_zone0/temp"]