misc-sanity-checks.sh doesn't work on OS X

[John Schwarz]

The patch introduced by https://review.openstack.org/#/c/143539/ changed the sanity script to do all sorts of tests. Among those, it creates a new temporary directory using /bin/mktemp.

On OS X, the executable is present in /usr/bin/mktemp.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/143947

[OpenStack Infra (hudson-openstack)]

Change abandoned by John Schwarz (<email address hidden>) on branch: master
Review: https://review.openstack.org/143947
Reason: Fixed by https://review.openstack.org/#/c/143797/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/143797
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=a640318bda7e94278434bafba75d39052ef217ab
Submitter: Jenkins
Branch: master

commit a640318bda7e94278434bafba75d39052ef217ab
Author: YAMAMOTO Takashi <email address hidden>
Date: Wed Dec 24 17:21:35 2014 +0900

    misc-sanity-checks.sh: Some cleanups

    Some cleanups for commit 4fdda65a5b9f379af997e1e971865ccfa7a93156.

    - Don't assume the path of mktemp command. It's /usr/bin/mktemp
      for some platforms. eg. NetBSD. Also, always provide a template
      as it's necessary for some platforms, eg. OS X. This snippet was
      taken from the example in NetBSD's mktemp(1).
    - Move a comment to the appropriate place.
    - Improve a regex to ignore more comments.
    - As the pattern for find -path is not a regex, no escape is necessary
      for period.

    Closes-Bug: #1405584
    Change-Id: Ia8358f0f7ebe9bc445ce5aa3c4f340546f37db05