Hardware abstraction class (#2080)

* hardware abstraction class

* De Morgan

* Rename pc hardware class

* Fix sound card in controlsd

* Pc get sim info

* fix hardware in test

* two more

* No more random imei on android

* no randomness on android

* Need to return something that looks like imei for registration to work

* Return proper network strength

* Unused import

* Bug fixes + gpsd is only android
old-commit-hash: c7152d54192605c833912b69cf85514ac2e1b1fc

common/hardware_base.py

@@ -0,0 +1,34 @@
+from abc import abstractmethod
+
+class HardwareBase:
+  @abstractmethod
+  def get_sound_card_online(self):
+    pass
+
+  @abstractmethod
+  def get_imei(self, slot):
+    pass
+
+  @abstractmethod
+  def get_serial(self):
+    pass
+
+  @abstractmethod
+  def get_subscriber_info(self):
+    pass
+
+  @abstractmethod
+  def reboot(self, reason=None):
+    pass
+
+  @abstractmethod
+  def get_network_type(self):
+    pass
+
+  @abstractmethod
+  def get_sim_info(self):
+    pass
+
+  @abstractmethod
+  def get_network_strength(self, network_type):
+    pass