Provide systemd files

+ move example cfg from etc/ to cfg/

Change-Id: I437b3e2aaca55539ff110f5a46e411b34e0a0b9c
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/21319
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>

cfg/sim_mlz_stressihtf2_v2.cfg

@@ -0,0 +1,76 @@
+[node stressihtf2]
+description = [sim] Stressihtf2 box of MLZ Sample environment group
+	.
+	Controls an High Temperature Furnace with an Eurotherm and an PLC controlling some valves and checking cooling water.
+
+meaning={'T_regulation':{'T':100}, 'T_sample':{'T_sample':100}}
+
+[interface tcp]
+type=tcp
+bindto=0.0.0.0
+bindport=10767
+
+[module T]
+class=secop.simulation.SimDrivable
+.description=Main temperature control node of Stressihtf2.
+value.unit='degC'
+value.default=20
+target.datatype=["double", 0, 2000]
+target.default=20
+target.unit='degC'
+.extra_params=ramp,regulationmode,abslimits,userlimits
+ramp.datatype=["double",0,600]
+ramp.description=target ramping speed in K/min.
+ramp.default=60
+ramp.unit=K/min
+abslimits.datatype=["tuple",[["double"],["double"]]]
+abslimits.default=[0,2000]
+abslimits.description=currently active absolute limits for the setpoint.
+abslimits.unit='degC'
+abslimits.readonly=True
+userlimits.datatype=["tuple",[["double"],["double"]]]
+userlimits.default=[0,300]
+userlimits.description=current user set limits for the setpoint. must be inside or coincide with abslimits.
+userlimits.unit='degC'
+
+[module T_sample]
+class=secop.simulation.SimReadable
+.description=(optional) Sample temperature sensor.
+.visibility=expert
+value.default=300
+value.unit='degC'
+
+[module N2]
+class=secop.simulation.SimWritable
+.description=Switches the N2 gas inlet on or off.
+.visibility=expert
+value.default='off'
+value.datatype=["enum", {'off':0,'on':1}]
+target.datatype=["enum", {'off':0,'on':1}]
+target.default='off'
+
+[module He]
+class=secop.simulation.SimWritable
+.description=Switches the He gas inlet on or off.
+.visibility=expert
+value.default='off'
+value.datatype=["enum", {'off':0,'on':1}]
+target.datatype=["enum", {'off':0,'on':1}]
+target.default='off'
+
+[module lamps]
+class=secop.simulation.SimWritable
+.description=Switches the heating lamps on or off.
+.visibility=expert
+value.default='on'
+value.datatype=["enum", {'off':0,'on':1}]
+target.datatype=["enum", {'off':0,'on':1}]
+target.default='on'
+
+[module water_ok]
+class=secop.simulation.SimReadable
+.description=Readout of the cooling water state.
+.visibility=expert
+value.default='ok'
+value.datatype=["enum", {'failed':0,'ok':1}]
+