allow local image building without pushing

vendor: update go-oidc to fix parsing panic

fix/git-version: Update git-version to use valid docker tag if dirty

contrib/k8s: YAML brevity via references, minimum resource requests

- Add resources for deployments
- Add readiness probe for master
- Use YAML references for easier maintenance/readability

K8S dex-overlord.yaml ordering fix

Use Client defined in dex instead of go-oidc for storing clients

* TestCreateClient was missing test coverage on error cases
* Fixed bug where 500s were being reported for bad requests
* changed function signature of NewAdminAPI back to old way of passing
  in lots of repos: passing in a DbMap made it difficult to test
* added swappable ID and Secret generators when creating Clients

It's never used by downstream code, and besides, it's not really the
secret but a Hash of the secret.

Also require client ID and secret.

Get rid of all outdated "ClientIdentity" terminology.

This is instead of oidc.ClientIdentity. This makes it easier to add new
fields custom to dex to the client.

Update examples/README.md

Fix command line for example-cli

examples/app: infer callback path from redirect URL

schema: remove generator_import file used for godep

contrib/k8s: update to use 1.2 features

generator_import.go existed to trick godep to vendoring a main
package. Since moving to glide, this file is no longer needed.

- Consolidate files
- Update to Deployments
- Use Ingress, add ingress controller help in README
- Remove hardcoded namespace in postgres URI
- Remove hardcoded IP addresses
- Add readinessProbes

tests: add HandleTokenFunc test

Fixes #408

replace godep with glide

server: add more validation to --no-db static file parsing

db: print better error messages for invalid input

When client secrets are not base64 encoded, print an error message
that's not a generic base64 decode error:

   client secrets must be base64 decodable. See issue #337.
   Please consider replaceing "secret" with "c2VjcmV0"

When a user file is missing a mandatory field print an error message.

	Unable to build Server: user elroy-foo is missing email field

For #400

In #393 the format of the static user file in --no-db mode changed.
However, the old format loads without error, which has caused
issues for developers with existing user files.

Add an explicit check to ensure the file is not using the old
format. If they are, print a better error message.

It's part of the standard tooling and no longer lives in
golang.org/x/tools.

See https://golang.org/cl/20810