refactor!: Rename template to generate and move rebase/upgrade under switch (#116)

This updates the `template` subcommand to be `generate`. The `template`
usage will continue to work as an alias to `generate`. A new `switch`
command is added that will manage both `rpm-ostree rebase` and
`rpm-ostree upgrade` and is fully replacing the respective subcommands
as a breaking change.

The new `switch` command is under the feature flag `switch` and will
currently only build for the `main` branch builds until it is moved as a
default feature (`v0.9.0`).

Closes #159

integration-tests/mock-scripts/buildah

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 print_version_json() {
   local version="1.24.0"
@@ -8,6 +8,11 @@ print_version_json() {
 main() {
   if [[ "$1" == "version" && "$2" == "--json" ]]; then
     print_version_json
+  elif [[ "$1" == "build" && "$6" == *"cli_test.tar.gz" ]]; then
+    tarpath=$(echo "$6" | awk -F ':' '{print $2}')
+    echo "Exporting image to a tarball (JK JUST A MOCK!)"
+    echo "${tarpath}"
+    touch $tarpath
   else
     echo 'Running buildah'
   fi

integration-tests/mock-scripts/podman

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 print_version_json() {
   local version="4.0.0"
@@ -8,6 +8,11 @@ print_version_json() {
 main() {
   if [[ "$1" == "version" && "$2" == "-f" && "$3" == "json" ]]; then
     print_version_json
+  elif [[ "$1" == "build" && "$6" == *"cli_test.tar.gz" ]]; then
+    tarpath=$(echo "$6" | awk -F ':' '{print $2}')
+    echo "Exporting image to a tarball (JK JUST A MOCK!)"
+    echo "${tarpath}"
+    touch $tarpath
   else
     echo 'Running podman'
   fi

integration-tests/mock-scripts/rpm-ostree

@@ -1,9 +1,7 @@
-#!/bin/sh
+#!/bin/bash
 
 set -euo pipefail
 
-echo 'Running rpm-ostree'
-
 if [ "$1" = "rebase" ]; then
   if [ "$2" = "ostree-unverified-image:oci-archive:$BB_TEST_LOCAL_IMAGE" ]; then
     echo "Rebased to local image $BB_TEST_LOCAL_IMAGE"
@@ -13,6 +11,23 @@ if [ "$1" = "rebase" ]; then
   fi
 elif [ "$1" = "upgrade" ]; then
   echo "Performing upgrade for $BB_TEST_LOCAL_IMAGE"
+elif [ "$1" = "status" ]; then
+  cat <<EOF
+{
+  "deployments": [
+    {
+      "container-image-reference": "ostree-image-signed:docker://ghcr.io/blue-build/cli/test",
+      "booted": true,
+      "staged": false
+    },
+    {
+      "container-image-reference": "ostree-image-signed:docker://ghcr.io/blue-build/cli/test:last",
+      "booted": false,
+      "staged": false
+    }
+  ]
+}
+EOF
 else
   echo "Arg $1 is not recognized"
   exit 1