rbenv has a special exec function which loads the correct ruby version before executing a command.
The syntax for this is `/usr/local/rbenv/bin/rbenv exec gem ...` for example.
But previously when specifying executable='/usr/local/rbenv/bin/rbenv exec gem' this would not work because the string was treated as one executable. This PR fixes that by splitting the executable on spaces.

Update tower.rst

Added missing fallback to hw_sector_size

Point to current URLs, fix a Ansible/Tower reference.

module rax_scaling_group: safe normalization of nics

[openbsd-pkg] Add note regarding package flavors

Fix in pkgutil: don't call pipes.quote() on None

unarchive: improve failure detection and reporting

Prevents a "not a legal parameter" error for play ds structures that
may be passed into the Play() constructor, which really is mainly a
concern during tests.

fix for repo urls like ssh://git@github.com/ansible/ansible.git

Fix task description

Removed duplicate entries (1.6.1-1.6.3) in changelog.

Related to #7777

In this function, 'site' may be None, which will cause an exception
if it is passed to pipes.quote().

This adds a note to the openbsd-pkg module which explains how to specify
package flavors as well as how to avoid ambiguity errors on a package
with multiple flavors.

Technically, this is not Ansible-specific, but it's pretty likely the
user will encounter this problem.

Added missing fallback from physical_block_size to hw_sector_size in sectorsize fact discovery for kernels older than May 2009.

References #5761

Previously, the get_fqdn() function in known_hosts.py only worked
with urls that started with git@, and ignored any urls that started
with a normal schema type (ie. http:// or ssh://). This patch corrects
that by using urlparse to parse the hostname portion out of urls that
have a proper schema.

Fixes #7474

SoftLayer Inventory script

Merge branch 'fix-lineinfile-eof-newline' of https://github.com/ahtik/ansible into ahtik-fix-lineinfile-eof-newline

Add support for Linaro distribution in hostname module

changed sector size fact source 

zfs: fix incompatibility - share.nfs vs sharenfs (issue #7696)

Made it a bit more obvious that 45 are 45 seconds