Issue 8872: use getpass.getpass() to read password.

Fixes #8758

This avoids passing the plaintext raw password into the script as a
command-line argument, which shells such as bash and zsh will
typically log into a file like ~/bash_history.

As a small bonus, this works a LOT more smoothly if the user's
password has characters in it that either the shell or Python syntax
might like to interpret as metacharacters, like '\' or '"'.

getpass.getpass() is part of Python's standard library in all versions
between 2.4 and 3.3 at least.

Memcached factcache improvements

docs: Add versionadded for run_once

zabbix_maintenance: move to new boilerplate

rax modules: Perform region validation early

Add additional Azure Regions

Merge branch 'npm-ignore-scripts' of https://github.com/tkellen/ansible into tkellen-npm-ignore-scripts

Handle exceptions during config file parsing

Supporting SSL cert location on SunOS (SmartOS, really)

Fix description on quantum_subnet module

Update playbooks_variables.rst

Corrected VM metadata obtention between Abiquo versions

Can override each role's install path

service: use self.changed in service_enable_rcconf().

portage: Add support for --changed-use

Always return a list even if its empty.

window facts. Select certificate to check for expiry from winrm configuration

This change selects the certificate from the winrm configuration and attempts to find the expiry date from that.
Trond Hindenes pointed out that simply picking the first certificate from local computer certs is not guaranteed to select the correct certificate.

Merge pull request #8833 from jhawkesworth/win_facts_powershell_version_and_winrm_cert_expiry_revised

Revised additions to windows facts

win_json_facts_setup_improvements; All changes referenced in PRs #8767 , #8768 , #8769

Handle uncaught exceptions during config file parsing

Adds us-gov-west-1 aws ec2 region to cloud library

Formation, Format, and Constiency