Add Rackspace Autoscale modules

- rax_scaling_group
- rax_scaling_policy
Back-porting 1.6.x release info into CHANGELOG/RELEASES and packaging
Merge branch 'rax-autoscale' of https://github.com/sivel/ansible into sivel-rax-autoscale
Escape backslash in assemble module docs
Added quotes around key path - Issue 7713
Merge pull request #7717 from Xerkus/patch-2

Escape backslash in assemble module docs
Error checking and reporting on interface ufw rule
Merge pull request #7726 from ebastos/devel

Added quotes around key path - Issue 7713
Merge pull request #7729 from rgbkrk/ufw_check_direction+interface

Error checking and reporting on interface ufw rule
Made it a bit more obvious that 45 are 45 seconds
zfs: work around incompatibility by renaming share.nfs to sharenfs

Fixes #7696
changed sector size fact source from hw_sector_size to physical_block_size, fixes issue 5761
Add a new password pattern to the run_command filter
Adding new rax_scaling* modules to the CHANGELOG
Merge branch 'sivel-rax-autoscale' into devel
Merge pull request #7734 from WyriHaximus/patch-1

Made it a bit more obvious that 45 are 45 seconds
Merge pull request #7737 from toddmowen/zfs-fix-7696

zfs: fix incompatibility - share.nfs vs sharenfs (issue #7696)
Merge pull request #7740 from jkramarz/issue-5761

changed sector size fact source