Update RBAC for SealedSecrets

Changelog:

• Restrict SealedSecrets RoleBinding to ServiceAccount #0b2caa7 @alexellis

Updates from community

Enable Dockerfile template

Add the URL builders to SDK

Changelog:

• Add the URL builders to SDK via #371

Re-vendor SDK for HMAC on by default

Make validation turn on by default

Turn on validation on customers and hmac by default
now you must be explicit on turning it off by setting it
to `0` or `false` started by @ivanayov

Signed-off-by: Martin Dekov (VMware) <[email protected]>

Re-vendor event SDK

Add RepoURL and OwnerID to sdk

Adding RepoURL and Owner ID in the SDK because it was
manually added in functions and not through vendoring

Signed-off-by: Martin Dekov (VMware) <[email protected]>

Add Clear method to sdk.Status

- allows for cleaner abstraction when resetting statuses.

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

Release to include owner ID from GitHub

Fix error with invalid text in label

The affected code was clearly not tested with Kubernetes where
label values are tightly constrained. This fixes the error by
putting the URL of a Git repo into an annotation.

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

Add repository URL to GitHub events

Add missing url / RepositoryURL to sdk

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

Vendor repo ID, installation events and shortSha function

Move installation event into SDK

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

Vendor new SDK structs/fields

Call garbage-collect through async route

Calling garbage-collect through async route in github-event
so the request wont time out in case we have couple of functions
deployed

Signed-off-by: Martin Dekov (VMware) <[email protected]>