systemd files, documentation and a bug fix

Change-Id: I66e34059e0c1d604b82fba558bfeadee2ace093c
diff --git a/person_detection/base_camera.py b/person_detection/base_camera.py
index 53525ab..e2e85b6 100644
--- a/person_detection/base_camera.py
+++ b/person_detection/base_camera.py
@@ -1,12 +1,8 @@
 import paho.mqtt.client as mqtt
 import time
-import os
-import sys
 import threading
 import logging as log
-from multiprocessing import Process, Queue, Value, Array, Lock
-import threading
-from collections import defaultdict
+from multiprocessing import Process, Queue, Value, Lock
 
 from roc import Roc
 import config
@@ -79,8 +75,8 @@
         self.mbrhigh = mbrhigh
         self.devicegroup = devicegroup
         self.noroc = noroc
-        self.roc = Roc(user, password)
 
+        self.roc = Roc(config.url, user, password, config.enterprise, config.site)
 
         """Start the background camera process if it isn't running yet."""
         if BaseCamera.cameras[int(self.device)] == 0:
@@ -115,14 +111,12 @@
             BaseCamera.event[self.device].set()  # send signal to clients
             time.sleep(0)
 
-
     def _process(self):
         """Camera background process."""
         frames_iterator = self.frames()
         for frame in frames_iterator:
             BaseCamera.deviceQ[self.device].put(frame, block=True)
 
-
     def person_detected(self, num):
         self.last_detected = time.time()
         if not self.detected:
@@ -139,7 +133,7 @@
         self.detected = False
         self.timer = None
         BaseCamera.lock.acquire()
-        BaseCamera.activity_counter.value -=1
+        BaseCamera.activity_counter.value -= 1
         if BaseCamera.activity_counter.value <= 0:
             BaseCamera.activity_counter.value = 0
             self.set_resolution_low()
@@ -147,30 +141,25 @@
                 self.roc.set_mbr(self.devicegroup, self.mbrlow)
         BaseCamera.lock.release()
 
-
     def start_timer(self):
         # log.info("Start timer for device {}".format(device))
         self.timer = threading.Timer(10.0, self.timer_expiry)
         self.timer.start()
 
-
     def set_resolution_high(self):
         for device in range(0, len(config.cameras)):
             self.set_resolution(str(device), "high")
 
-
     def set_resolution_low(self):
         for device in range(0, len(config.cameras)):
             self.set_resolution(str(device), "low")
 
-
     def set_resolution(self, device, level):
         log.info("Setting camera {} resolution to {}".format(device, level))
         client = mqtt.Client()
         client.connect(self.mqttBroker)
         client.publish("camera/" + str(5000 + int(device)), level)
 
-
     def timer_expiry(self):
         now = time.time()
         diff = now - self.last_detected