compat: accept tag in /images/create?fromSrc

Accept a tag in the compat api endpoint. For the fromImage param we
already parse it but for fromSrc we did not.

Fixes #18597

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

test/apiv2/10-images.at

@@ -66,6 +66,13 @@ podman untag docker.io/library/alpine:latest
 
 t POST "images/create?fromImage=quay.io/libpod/alpine&tag=sha256:fa93b01658e3a5a1686dc3ae55f170d8de487006fb53a28efcd12ab0710a2e5f" 200
 
+# create image from source with tag
+# Note the "-" is used to use an empty body and not "{}" which is the default.
+t POST "images/create?fromSrc=-&repo=myimage&tag=mytag" - 200
+t GET "images/myimage:mytag/json" 200 \
+  .Id~'^sha256:[0-9a-f]\{64\}$' \
+  .RepoTags[0]="docker.io/library/myimage:mytag"
+
 # Display the image history
 t GET libpod/images/nonesuch/history 404
 

test/apiv2/test-apiv2

@@ -255,6 +255,10 @@ function t() {
 
         for arg; do
             case "$arg" in
+                # This is just some hack to avoid adding `-d {}` to curl for endpoints where we really need an empty body.
+                # --disable makes curl not lookup the curlrc file, it't should't effect the tests in any way.
+                -)                curl_args+=(--disable);
+                                  shift;;
                 *=*)              post_args+=("$arg");
                                   shift;;
                 *.json)           _add_curl_args $arg;