fix(coreos-base/coretest): Remove/replace coretest TlsDate checks

pull in https://github.com/coreos/coretest/pull/36 to fix TlsDate
checks and replace them with calls to ntpdate
Merge pull request #650 from brianredbeard/tlsdate-fix

pull in fix for coreos/coretest#35 to fix TlsDate checks
feat(coreos-base/oem-rackspace-teeth): Add teeth OEM
add(coreos-base/oem-cloudstack): CloudStack support

Provide initial support for CloudStack.
bump(sys-kernel/coreos-kernel): Update to v3.14.5, update panic settings

In addition to bumping to the latest stable this tweaks the default
settings for panics and lockups so that they do not need to be set in
sysctl configs. We needed to update these settings anyway and setting it
here means they will apply before boot gets around loading sysctl confs.

Previously the sysctl options set the hardlockup threshold to 5 seconds
and the softlockup threshold to 10 seconds. This is perhaps a bit too
aggressive, just use the default values of 10 and 20 seconds.

Also sysctl enabled an immediate reboot after panic, using a friendlier
60 seconds gives users a chance to see the error before the reboot.
Merge pull request #651 from marineam/panic

bump(sys-kernel/coreos-kernel): Update to v3.14.5, update panic settings
bump(coreos-base/coreos-cloudinit): v0.7.4
bump(sys-apps/baselayout): Remove panic options from sysctl

Replaced by kernel config options in 57137c08.
Merge pull request #653 from marineam/panic

bump(sys-apps/baselayout): Remove panic options from sysctl
Merge pull request #652 from crawford/cloudinit

bump(coreos-base/coreos-cloudinit): v0.7.4
Merge pull request #647 from crawford/teeth

feat(coreos-base/oem-rackspace-teeth): Add teeth OEM
bump(dev-db/etcd): bump to 0.4.2

https://github.com/coreos/etcd/releases/tag/v0.4.2
Merge pull request #654 from philips/etcd

bump(dev-db/etcd): bump to 0.4.2
bump(coreos-base/cros-devutils): Update to latest platform/dev

Includes bump of gmerge for the sake of keeping things in sync.
bump(coreos-base/update_engine): New update_engine, no more metrics.

This update removes the dependency on the ChromeOS metrics library that
we never made use of in CoreOS.
Merge pull request #655 from marineam/updates

Updates
bump(coreos-base/coreos-init): ssh-keygen and motdgen.service fixes

fix(sshd_keygen): Generate all key types
feat(motdgen): Ensure that motdgen runs after locksmith starts
Merge pull request #656 from crawford/init

bump(coreos-base/coreos-init): ssh-keygen and motdgen.service fixes
fix(profiles): Update to openssl-1.0.1h

https://bugs.gentoo.org/show_bug.cgi?id=512506
Merge pull request #657 from philips/openssl-1.0.1h

fix(profiles): Update to openssl-1.0.1h