HR-18 CiviHR - Cross-Cutting - Sample dataset

Adding 4h because the sample data will need to be adapted to the new job schema.

Following implementation of CRM-12922, we need to create sample data for the new job tables. A few key things to note:

• For each HRJob, there may be 0 or 1 records for each of these entity types: HRJobHealth, HRJobHour, HRJobPay, HRJobPension.
• For each HRJob, there should be one HRJobLeave for each leave_type. (To get a list of valid leave_types, one can call civicrm_api('HRJobLeave', 'getoptions', array('field' => 'leave_type'))
• For each HRJob, there may be 0 to many HRJobRoles. The sample-data should include cases with 0, 1, 2, and 3 job roles.

Submitted PR for the changes as per the above comment: https://github.com/civicrm/civihr/pull/31

Small change request – there's a spot in the code like this:

//For each HRJob, there may be 0 or 1 records for each of these entity types: HRJobHealth, HRJobHour, HRJobPay, HRJobPension.
$cnt = mt_rand(0, 1);
for ($i = 1; $i <= $cnt; $i++) {

This calls mt_rand() once and then makes all four records or makes no records. Each entity should have its own mt_rand(0,1) call. (We might generate HRJobHealth and HRJobHour but not HRJobPay or HRJobPension. Treating each as a separate variable produces 2^4=16 possible combinations.)

Note: Treating this now as an "Epic" ticket rather than as a "Sub-task" ticket, so the "Component" is unset and the set "Label" is set to "CiviHRPhase1".