This simplifies the stand-up of a sandbox:

Only 2 main Vagrant calls are now needed (`vagrant up` and `vagrant up machine1`).
This PR only updates the Vagrant Virtualbox setup. The Vagrant Libvirt and Terraform
still need to be updated.

This uses docker-compose as the entry point for standing up the stack and makes the stand-up
of the sandbox more portal. Vagrant and Terraform are only responsible for standing up infrastructure
and then running docker-compose, not for running any glue scripts.

The docker-compose calls out to single-shot services to do all the glue required to get the fully
functional Tinkerbell stack up and running. All the single-shot services are idempotent.
This increases portability and the development iteration loop. This also simplifies the required
steps needed to get a fully functioning sandbox up and running.

This is intended to help people looking to get started by getting them to a provisioned
machine quicker and more easily.

Signed-off-by: Jacob Weinstock <jakobweinstock@gmail.com>

releases/cmd/bump-version/envfile/envfile.go

@@ -0,0 +1,48 @@
+package envfile
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+
+	"github.com/joho/godotenv"
+)
+
+type EnvFile map[string]string
+
+func ReadEnvFile(f string) (EnvFile, error) {
+	myEnv, err := godotenv.Read(f)
+	if err != nil {
+		return nil, err
+	}
+	return myEnv, nil
+}
+
+// Copied and modified from https://github.com/joho/godotenv
+
+const doubleQuoteSpecialChars = "\\\n\r\"!$`"
+
+func Marshal(envMap map[string]string) (string, error) {
+	lines := make([]string, 0, len(envMap))
+	for k, v := range envMap {
+		lines = append(lines, fmt.Sprintf(`export %s="%s"`, k, doubleQuoteEscape(v)))
+	}
+	sort.Strings(lines)
+	return strings.Join(lines, "\n"), nil
+}
+
+func doubleQuoteEscape(line string) string {
+	for _, c := range doubleQuoteSpecialChars {
+		toReplace := "\\" + string(c)
+		if c == '\n' {
+			toReplace = `\n`
+		}
+		if c == '\r' {
+			toReplace = `\r`
+		}
+		line = strings.Replace(line, string(c), toReplace, -1)
+	}
+	return line
+}
+
+// End of the part copied from https://github.com/joho/godotenv