Feature/set crontab

[MateoLostanlen]

In pyro-engine we have two crontab runnig the two scripts involved in this PR:

on crontab run check_internet_connection.sh to ping google every 10mn to check if the pi is still have internet access, if it fail it reboot the network and then the pi if it's still failling

the second one run update_script.sh to check pyro-engine master branch for update every day at 3am

In this PR we move these two script out of the python package and specify how to setup the crontabs

[codecov]

Codecov Report

Merging #87 (d8cb3f5) into develop (bed9bfb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop      #87   +/-   ##
========================================
  Coverage    63.68%   63.68%           
========================================
  Files            5        5           
  Lines          179      179           
========================================
  Hits           114      114           
  Misses          65       65           

Flag	Coverage Δ
unittests	63.68% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.