Introduce Podman machine reset

Podman machine reset is a new command that will "reset" your podman
machine environment.  Reset is defined as:

* Stop and Remove all VMs
* Remove the following directories:
    - configuration dir i.e. ~/.config/containers/podman/machine/qemu
    - data dir i.e. ~/.local/.share/containers/podman/machine/qemu

When deleting, if errors are encountered, they will be batched and spit
out at the end.  Podman will try to proceed even in error in doing what
it was told.

Signed-off-by: Brent Baude <bbaude@redhat.com>

pkg/machine/e2e/config_reset_test.go

@@ -0,0 +1,25 @@
+package e2e_test
+
+type resetMachine struct {
+	/*
+	  -f, --force           Stop and do not prompt before reseting
+	*/
+
+	force bool
+
+	cmd []string
+}
+
+func (i *resetMachine) buildCmd(m *machineTestBuilder) []string {
+	cmd := []string{"machine", "reset"}
+	if i.force {
+		cmd = append(cmd, "--force")
+	}
+	i.cmd = cmd
+	return cmd
+}
+
+func (i *resetMachine) withForce() *resetMachine {
+	i.force = true
+	return i
+}