[21.05] Fix isolated job home dir on pulsar

[mvdbeek]

What did you do?

• Pass $_GALAXY_JOB_HOME_DIR and _GALAXY_JOB_TMP_DIR to pulsar if tool is configured that way

Why did you make this change?

Some sratools tools that run on jetstream via pulsar are failing because they don't set up an isolated job home dir:

mkdir: cannot create directory '/home/g2main': Permission denied

For the tests to pass we also need a change in pulsar for locating _GALAXY_JOB_HOME_DIR outside of the job working directory (galaxyproject/pulsar#255).

How to test the changes?

(select the most appropriate option; if the latter, provide steps for testing below)

• I've included appropriate automated tests.

License

• I agree to license these contributions under Galaxy's current license.
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For UI Components

• I've included a screenshot of the changes

[jmchilton]

I think I've released Pulsar 0.14.6 with the fix. Thanks @mvdbeek

[jmchilton]

Thank you so much - this is huge.