ci: Auto deploy latest build of master

After building and publishing a new "latest" container image, we can
automatically deploy it to production by restarting the *sshca*
Deployment.  We use `curl` here to patch the Deployment manually, since
`kubectl` is not available in the container image.  This is a simple
enough operation that it's not worth the effort of trying to install it.

.editorconfig

@@ -8,3 +8,8 @@ trim_trailing_whitespace = true
 
 [**.rs]
 max_line_length = 79
+
+[Jenkinsfile]
+max_line_length = 79
+indent_style = space
+indent_size = 4