directory creation is not needed prior to calling mount_point.mount()

[Sushil Kumar]

https://github.com/openstack/trove/blob/master/trove/guestagent/volume.py#L41 creates the directory before calling the mounting method

Directory creation is useless as the method VolumeMountPoint.mount at https://github.com/openstack/trove/blob/master/trove/guestagent/volume.py#L133

would create the directory in the absence of existing path, so no need of an extra step. :)

Would prefer to remove this extra parcel.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/62754

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/62754
Committed: https://git.openstack.org/cgit/openstack/trove/commit/?id=3344661b18f55bb997ab435169cabeba97d55976
Submitter: Jenkins
Branch: master

commit 3344661b18f55bb997ab435169cabeba97d55976
Author: Sushil Kumar <email address hidden>
Date: Tue Dec 17 20:38:28 2013 +0000

    Removes directory creation prior to _tmp_mount

    Reasons:
    - Directory creation is included in VolumeMountPoint.mount method.
    - No need to repeat the steps before calling the mount method.

    Changes:
    - Removed directory creation prior to calling _tmp_mount.
    - Test updated to reduce number of utils.execute,
      as we now have one less call in the code.

    Change-Id: I5136f1ce537c919ff2e009cd617f33925d955e88
    Closes-Bug: #1261905