Keep track of job IDs in invocation records

For Panorama and dvdt we identified the need to keep track of job ids in order to correlate logging messages across the infrastructure.

Most job IDs can be extracted from environment variables (e.g. PBS_JOBID).

This change would add a new element to the invocation record that contains
all of the job IDs Kickstart was able to extract from its environment. This element might look like this:

<jobid condor="123.0" pbs="1234.submithost.edu"/>