Update Golang build SDK to 1.9.4

This was tested by Vivek Singh.

Signed-off-by: Alex Ellis (VMware) <[email protected]>

Enable port to be configured

The `port` env-var can now be set to configure the start-up TCP
port for faas-netes. This is required for when the daemon is run
inside a pod which already exposes port 8080.

Signed-off-by: Alex Ellis (VMware) <[email protected]>

Attempt to fix Docker CLI push issue

Update .travis.yml push behaviour

Updates bash push stage to use -z instead of -s check. Corrects
error in Travis build.

Attach SecretTypeDockerConfigJson secret type for deployments

The SecretTypeDockerConfigJson is now used as of Kubernetes 1.9
to store image pull secrets for fetching images from private
repositories. [0] This change allows SecretTypeDockerConfigJson
as a parallel option to the existing option SecretTypeDockercfg.

[0] https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/

Signed-off-by: Alex Ellis (VMware) <[email protected]>

Fix bad error messasge about updates to reads

Signed-off-by: Alex Ellis (VMware) [email protected] <[email protected]>

Code review: re-vendor and update to AvailableReplicas

Signed-off-by: Alex Ellis (VMware) <[email protected]>

Move to non-root user

Signed-off-by: Alex Ellis <[email protected]>

make async=true as default

Signed-off-by: Rimas Mocevicius <[email protected]>

Update to FaaSProvider 0.5 with health endpoint

Signed-off-by: Alex Ellis <[email protected]>