Add --all flag even though it is a noop so scripts will work

Until podman build supports caching, their are no intermediary builds,
but people might still use scripts that use the --all option.
Adding this will not hurt anything and could fix scripts.

Also fixed sorting issues in options handling of images

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

Closes: #896
Approved by: mheon

completions/bash/podman

@@ -888,16 +888,20 @@ _podman_info() {
 
 _podman_images() {
     local boolean_options="
-     --help
-     -h
-     --quiet
-     -q
-     --noheading
-     -n
-     --no-trunc
+     -a
+     --all
+     --digests
      --digests
-     --filter
      -f
+     --filter
+     -h
+     --help
+     --no-trunc
+     --notruncate
+     -n
+     --noheading
+     -q
+     --quiet
      "
     local options_with_args="
     --format