Added shell script to check & restart server

[Graeme-Smith]

Cron job scheduled shell script added which will periodically check the server & restart it if it is down. Also update development docs.

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This change is 

[aledj2]

can you add the installation of this crontab into the deployment repo?

Reviewable status: 0 of 2 files reviewed, 2 unresolved discussions (waiting on @Graeme-Smith)

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restart_server.sh line 8 at r1 (raw file):

# Command to restart the server (replace this with the actual command)
# TODO check the file path for this command on the server
RESTART_COMMAND="ansible-playbook -i graeme/deployment/inventories/production graeme/deployment/playbooks/basher.yml"

this needs updating?

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restart_server.sh line 12 at r1 (raw file):

# Perform the HTTP request using curl & check for successful exit code
if ! curl --output /dev/null --silent --head --fail "$URL"; then
  logger "The BASHer server is not running. Attempting to restart..."

is this the correct way to write to the syslog?