Added unit test cases for _is_share_eligible in NFS driver.

The generic NFS driver (under cinder/volume/drivers/nfs.py) has
a method called _is_share_eligible, which checks if a given NFS
share meet user specified conditions, such as:
  1. The ratio of actual space (used_space / total_space) is
     less than 'nfs_used_ratio'.
  2. There is enough space is available for the new volume.
This patch adds the corresponding unit test case for it.

Change-Id: I4489cbbca0a1a75a1144a87628843baf0a92f8a8
Closes-Bug: #1298414
Specify lld in tgt config backends

Otherwise when running tgt-admin --delete, it might forget
to invoke tgtadmn with "--lld iscsi" in order to delete the low-level
iscsi exports, which can cause crashes or hangs later on.

Closes-Bug: #1311640
Change-Id: I436c67c30565089236e987d84ac2609eedd2d2c7
Add rally job

Add rally scenario to be run by OpenStack CI system

Change-Id: Ie305ab51b75cd24e21868b965b9345a4444b2d20
Fix broken version responses

The version responses link to non-existing PDF and WADL files.
Remove the WADL link and replace the PDF link with a HTML link to
docs.openstack.org.

Change-Id: Id514caee32df430b616609144f52d1a58c93d9cd
Closes-Bug: #1313118
Closes-Bug: #1313116
Fix retyping volume that has volume type None

Modified volume_types_diff to work when one volume type is None.

Fixed _fix_encryption_specs so that the new dictionary is returned.

Change-Id: Iaba3032317f4d0649c917fb92403c4e9146fe3e9
Closes-Bug: #1311058
Fix solaris_execute in SolarisISCSIDriver.

A previous refactor [1] of SolarisISCSIDriver and SanDriver renamed
the `_execute` function to `san_execute`. However, SolarisISCSIDriver
still called the _execute function, which no longer exists in it's
parent classes.

This change calls san_execute instead of _execute in
super(SolarisISCSIDriver, san).

[1] https://review.openstack.org/#/c/38194/

Closes-Bug: #1318108
Change-Id: I4cafefdb3eef8f3c2c345907d7eabd4e8f88ef65
eliminate the need for hplefthandclient in tests

In order to eliminate the need to have the hplefthandclient in the
global-requirements project, we need to remove the hplefthandclient
from being imported in all HP LeftHand driver unit tests in cinder.

Change-Id: I4009ea17b507b1deb2a567dd420f309e15aaf92d
Closes-Bug: #1316824
Merge "Added unit test cases for _is_share_eligible in NFS driver."
Merge "Fix solaris_execute in SolarisISCSIDriver."
Imported Translations from Transifex

Change-Id: I91f80dd98e0c18492060ff1eca7ed9544a326797
Merge "Fix broken version responses"
Merge "Specify lld in tgt config backends"
Merge "Imported Translations from Transifex"
Merge "Fix retyping volume that has volume type None"
NetApp fix attach fail for already mapped volume

This patch fixes the error raised during mapping of a volume
to the host during attach operation if the volume is already
mapped to the host.

Change-Id: I4f711e7ac18eea0dfddab65fd85a3601fe967a88
Closes-bug: #1310659
BrcdFCSanLookupService should allow customize host key and policy

In BrcdFCSanLookupService, the initialization should allow the
customization of the known_hosts_file and missing_key_policy so that the
hosts key and missing policy can be customized according to the
different scenario and customer aspect. This will not change the default
behavior when no argument is given, but more flexible to allow the
caller to give more options according to different requirements.

Closes-Bug: #1320050
Change-Id: If5767f63ccd2cde5fbea30a6154acf4d28f662b6
Merge "eliminate the need for hplefthandclient in tests"
Check whether O_DIRECT is supported to iflag and oflag separately

The problem is when this is used for volume clear and the clear method
specifies use of the 'zero' option (/dev/zero) setting iflag direct is
not a valid option for that input file, but oflag direct is a valid
option for output file, so we should check iflag and oflag separately.

Change-Id: I4b627e95b68d56e3011cddc577c62fad0c384dba
Close-Bug: 1318748
Merge "NetApp fix attach fail for already mapped volume"
SSHPool in utils should allow customized host key missing policy

The cinder/utils SSHPool should allow  missing key policy and host key
file being customized so that any caller can determine by their own
scenario if the host key file can be customized, or if an 'AutoAdd' is
appropriate, or just reject the key when mismatch. This will give more
flexible customization and also prevent any security issue as a middle
man.

Closes-Bug: #1320056
Change-Id: I3c72b0d042de719ecd45429d376bd88d0aefb2cc