Merge pull request #939 from SoftLayer/v159

v1.5.9 version update

Merge pull request #926 from SoftLayer/issues923

Removed IPSEC vpn commands.

Merge pull request #915 from SoftLayer/v1.5.6

V1.5.6 version bump

Merge pull request #894 from SoftLayer/issues852-2

Fixed help message for vs create.

Merge pull request #881 from SoftLayer/v154

v1.5.4 version bump

Merge pull request #859 from SoftLayer/v1.5.3

v1.5.3 bump

Merge pull request #846 from SoftLayer/v1.5.2

v1.5.2 release version update and i18n updates

Merge pull request #827 from SoftLayer/issues826

Fixed sshKey option in 'hardware create'

Merge pull request #823 from SoftLayer/issues822

#822 temp fix for an API bug in file|block volume-list