Added timeout to shell commands

* use go to manage log files
* removed mysql_start.sh etc. in favor of calling mysql.server directly
* pass mysql server path through control scripts
* handle errors in mariadb manager instead of in os helper
[#73494162]
Update README.md
Update README.md
Update README.md
Bump src/cf-mysql-broker

Bump cloudfoundry/cf-mysql-broker:
  Derek Richard:
     Merge pull request #7 from philwhln/patch-1 ( Travis Success: https://travis-ci.org/cloudfoundry/cf-mysql-broker/builds/30510667 )
  Phil Whelan:
     innodb_stats_persistent: unless OFF => if ON ( Travis Unknown )
Allow maria to start with one node

* gofmt stuff
[#75134504]
Refactor test file to make file shorter

[#75134504]
Refactor Maria start script

*Flatten logic for readability

[#75134504]
Included mariadb package in mysql-broker VM.

Symlinked mysql client to /usr/local/bin in both mysql and mysql-broker
VMs.  For convenience using mysql on the bosh vms.
Added optional printing of logs to make tests shut up

* one more extraction from tests
[#75134504]
Quota enforcement tests write data in chunks

Hopefully, this will reduce flakiness caused by load balancer timeout errors