Improve failure checking

[shawaj]

Currently we only try 5 times to start the concentrator and then say it's failed...

hm-pktfwd/files/configurePktFwd.py

Lines 156 to 158 in 76897fd

	if(failTimes == 5):
	with open("/var/pktfwd/diagnostics", 'w') as diagOut:
	diagOut.write("false")

This doesn't work very well as sometimes it will fail more times than this, then work again, but the miner and diagnostics containers still get stuck because we do not check after 5 failures

[shawaj]

Temp fix in #62