Change config to Python

- Change Configuration format to be python-based.
- move config logic to frappy/config.py
- Add first py-config: cryo_cfg.py
- Adapt test to new expected config format

Change-Id: Iaec484e0e1e21ebbb1e5c74b53be6231329ddf71

cfg/cryo_cfg.py

@@ -0,0 +1,38 @@
+#####################################################################
+# Python version of frappy config
+#####################################################################
+
+Node('cryo_7.frappy.demo',
+    'short description' \
+    '' \
+    '' \
+    'This is a very long description providing all the glory details in all the ' \
+    'glory details about the stuff we are describing',
+    'tcp://10769',
+    more="blub",
+)
+
+# obviously not final form
+Mod('cryo',
+    'frappy_demo.cryo.Cryostat',
+    'A simulated cc cryostat with heat-load, specific heat for the sample and a ' \
+    'temperature dependend heat-link between sample and regulation.',
+    group='very important/stuff',
+    jitter=0.1,
+    T_start=10.0,
+    target=10.0,
+    looptime=1,
+    ramp=6,
+    maxpower=20.0,
+    heater=4.1,
+    mode='pid',
+    tolerance=0.1,
+    window=30,
+    timeout=900,
+    p = Param(40, unit='%/K'),  # in case 'default' is the first arg, we can omit 'default='
+    i = 10,
+    d = 2,
+    pid = Group('p', 'i', 'd'),
+    pollinterval = Param(export=False),
+    value = Param(unit = 'K', test = 'customized value'),
+)