rename framework methods to camelCase

for easier distinction:
- camelCase or singleword: framework method
- snake_case: driver method

(driver) parameters are lowercase, single word framework variables may
have to start with uppercase letters to distinguish...

Change-Id: I76536b6390324625b242c4f190553014c2ca61d6
Reviewed-on: https://forge.frm2.tum.de/review/20295
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

secop_mlz/amagnet.py

@@ -134,8 +134,8 @@ class GarfieldMagnet(SequencerMixin, Drivable):
         raise ConfigError(self,
                                  '_current2field polynome not monotonic!')
 
-    def init_module(self):
-        super(GarfieldMagnet, self).init_module()
+    def initModule(self):
+        super(GarfieldMagnet, self).initModule()
         self._enable = self.DISPATCHER.get_module(self.subdev_enable)
         self._symmetry = self.DISPATCHER.get_module(self.subdev_symmetry)
         self._polswitch = self.DISPATCHER.get_module(self.subdev_polswitch)