(BKR-496) Move create_tmpdir_on from beaker

[Dakta]

Also moves spec and acceptance tests. Corresponds to voxpupuli/beaker#1531 Note that this moves the fixed and improved version; wrote it, might as well keep it.

Moved to beaker-puppet because the only invocation was already here:

beaker-puppet/lib/beaker-puppet/helpers/puppet_helpers.rb

Line 883 in 5392709

create_tmpdir_on(host, name, user)

[Dakta]

Tested against puppetlabs/beaker head at 6fa2744a5dec68b694657aab86f4884e7e21bd6b

Spec Tests:

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Finished in 1.99 seconds (files took 1.33 seconds to load)
281 examples, 0 failures

Acceptance Tests (Git):

      Test Suite: tests @ 2018-07-26 11:21:42 -0700

      - Host Configuration Summary -


              - Test Case Summary for suite 'tests' -
       Total Suite Time: 43.19 seconds
      Average Test Time: 7.20 seconds
              Attempted: 6
                 Passed: 5
                 Failed: 0
                Errored: 1
                Skipped: 0
                Pending: 0
                  Total: 6

      - Specific Test Case Status -

Failed Tests Cases:
Errored Tests Cases:
  Test Case acceptance/tests/web_helpers_test.rb reported: #<RuntimeError: Failed to fetch_remote_dir 'http://ihn494f35775ikp.delivery.puppetlabs.net//test_dir.keJsoM/' (exit code pid 88668 exit 127)>
    Test line: acceptance/tests/web_helpers_test.rb:37:in `block (3 levels) in run_test'
Skipped Tests Cases:
Pending Tests Cases:
^C

Tests hang after Pending, during XML generation phase. Not considering related, since it did this before I started work.

Not sure why web_helpers_test.rb is in here, since web_helpers.rb is still back in beaker. Also not considering this failure related, since it was failing before I started work.