Namespace bash functions under build
Refactor GCS parts of new release process
Added scheduler binaries plus other misc fixes

* Support cleaning out built docker images
* Use bash arrays in places
* Lock etcd version we are testing against
Add support for versions in dockerized build.
Add support to fetch config file from network
Insert the current state of a replica controller.
Update version to use -dev suffix

According to the plan listed in docs/releasing.md.

The gitMinor will keep using a "+" suffix instead for now.

Added a //TODO to deprecate gitMajor and gitMinor in a follow up.

Tested:
- Built it from the git tree:

    $ make
    $ _output/go/bin/kubecfg -version
    Kubernetes version 0.2+, build 8d31eb03c11d4db64ae26809eef7f73070efd811
    $ _output/go/bin/kubecfg -version=raw
    version.Info{Major:"0", Minor:"2+", GitVersion:"v0.2-29-g8d31eb03c11d4d", GitCommit:"8d31eb03c11d4db64ae26809eef7f73070efd811", GitTreeState:"clean"}

- Built it with a direct `go install` (same as tarball):

    $ GOPATH=${PWD}/_output/go:${PWD}/Godeps/_workspace go install $KUBE_GO_PACKAGE/cmd/kubecfg
    $ _output/go/bin/kubecfg -version=raw
    version.Info{Major:"0", Minor:"2+", GitVersion:"v0.2-dev", GitCommit:"", GitTreeState:"not a git tree"}
    $ _output/go/bin/kubecfg -version
    Kubernetes version 0.2+, build (unknown)

A follow up commit will address the output of the -version (without "raw") command to use gitVersion instead of Major + Minor.

Signed-off-by: Filipe Brandenburger <filbranden@google.com>
Merge pull request #1247 from filbranden/version_dev

Update version to use -dev suffix
Match shell style guide.

Looking at https://google-styleguide.googlecode.com/svn/trunk/shell.xml
Small clean up in validation. errs is used as import path alias in validation.go, but it is reused
as a variable for validateVolume.
Use just GitVersion for the -version output

It turns out that that's simply the most useful information about the version
that was built.

For a git tree, it includes information about the closest release, number of
commits since the release, enough of the SHA1 to find the exact commit and
whether the tree was clean or dirty at build time.

For a build from tarball, it will include information of which release was built
and, when using a tarball from a not released commit (e.g. downloading
"master.tar.gz" from GitHub, not recommended!) it will include the -dev prefix
to indicate that was not an official release. (That's as good as we can get with
it.)

If additional information is required, it can be found with -version=raw.

Tested:

- Built from the git tree:

    $ _output/go/bin/kubecfg -version
    Kubernetes v0.2-29-gd916051e9db865
    $ _output/go/bin/kubecfg -version=raw
    version.Info{Major:"0", Minor:"2+", GitVersion:"v0.2-29-gd916051e9db865", GitCommit:"d916051e9db8650899acb9415a4e285e3e3a1f87", GitTreeState:"clean"}

- Built it from a dirty git tree:

    $ { echo 'package version'; echo 'var X = 1'; } >pkg/version/sillyvar.go
    $ make
    $ _output/go/bin/kubecfg -version
    Kubernetes v0.2-29-gd916051e9db865-dirty
    $ _output/go/bin/kubecfg -version=raw
    version.Info{Major:"0", Minor:"2+", GitVersion:"v0.2-29-gd916051e9db865-dirty", GitCommit:"d916051e9db8650899acb9415a4e285e3e3a1f87", GitTreeState:"dirty"}

- Tag it v0.3 and build it:

    $ git tag -a v0.3 -m 'Release Kubernetes v0.3'
    $ make
    $ _output/go/bin/kubecfg -version
    Kubernetes v0.3
    $ _output/go/bin/kubecfg -version=raw
    version.Info{Major:"0", Minor:"3", GitVersion:"v0.3", GitCommit:"d916051e9db8650899acb9415a4e285e3e3a1f87", GitTreeState:"clean"}

- Built it from a tarball:

    $ wget -O kubernetes.tgz https://api.github.com/repos/filbranden/kubernetes/tarball/version_string1
    $ tar xvf kubernetes.tgz
    $ cd filbranden-kubernetes-*/
    $ make
    $ _output/go/bin/kubecfg -version
    Kubernetes v0.2-dev
    $ _output/go/bin/kubecfg -version=raw
    version.Info{Major:"0", Minor:"2+", GitVersion:"v0.2-dev", GitCommit:"", GitTreeState:"not a git tree"}

- Built it with `go get`:

    # I need to prefetch the tree to replace the official tree with mine:
    $ mkdir -p ${TMPDIR}/gopath/src/github.com/
    $ ln -sf filbranden ${TMPDIR}/gopath/src/github.com/GoogleCloudPlatform

    # Now run `go get` to build kubecfg:
    $ GOPATH=${TMPDIR}/gopath go get github.com/filbranden/kubernetes/cmd/kubecfg

    # Check the version:
    $ ${TMPDIR}/gopath/bin/kubecfg -version
    Kubernetes v0.2-dev
    $ ${TMPDIR}/gopath/bin/kubecfg -version=raw
    version.Info{Major:"0", Minor:"2+", GitVersion:"v0.2-dev", GitCommit:"", GitTreeState:"not a git tree"}

Signed-off-by: Filipe Brandenburger <filbranden@google.com>
Add current state to replica controller.
Merge pull request #1250 from dchen1107/cleanup

Small clean up in validation.
Merge pull request #1248 from brendandburns/replicas

Make replica controllers return current state.
Merge pull request #1251 from filbranden/version_string1

Use just GitVersion for the -version output
Merge pull request #1221 from jbeda/dockerized-deploy

Fix up dockerized build and release build
Update vSphere getting started doc
Move default target list from build_go to config_go
function to turn list of targets to list of go packages
Merge pull request #1191 from eparis/targets-in-config

Move targets and packages from build-go to config-go