reduce ADC reads in pytest from 10,000 to 1,000

Reduce number of reads of ADC so that pytest will run faster.
Long run time is especially annoying when using strace.

Author: pdp7

test/test_adc.py

@@ -54,7 +54,7 @@ def test_many_read_adc(self):
 
         ADC.setup()
 
-        for x in range(0,10000):
+        for x in range(0,1000):
             start = time.time() 
             value = -1
             value = ADC.read("AIN1")