compat API: network inspect do not show isolate option

We force the isolate option on new newtworks because that is the docker
behavior. However when we inspect them they should not be displayed to
the caller since they have no idea about it and docker-compose throws an
error because of that.

Fixes #15580

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

test/compose/uptwice/docker-compose.yml

@@ -2,4 +2,5 @@ version: '3'
 services:
     app:
         build: .
-        command: sleep 10002
+        command: sleep 10001
+        stop_signal: SIGKILL # faster shutdown, no reason to wait 10 seconds

test/compose/uptwice/teardown.sh

@@ -0,0 +1,3 @@
+# -*- bash -*-
+
+mv docker-compose.yml.bak docker-compose.yml

test/compose/uptwice/tests.sh

@@ -1,4 +1,17 @@
 # -*- bash -*-
 
+CR=$'\r'
+NL=$'\n'
+
+cp docker-compose.yml docker-compose.yml.bak
 sed -i -e 's/10001/10002/' docker-compose.yml
-docker-compose up -d
+output=$(docker-compose up -d 2>&1)
+
+# Horrible output check here but we really want to make sure that there are
+# no unexpected warning/errors and the normal messages are send on stderr as
+# well so we cannot check for an empty stderr.
+expected="Recreating uptwice_app_1 ... ${CR}${NL}Recreating uptwice_app_1 ... done$CR"
+if [ "$TEST_FLAVOR" = "compose_v2" ]; then
+    expected="Container uptwice-app-1  Recreate${NL}Container uptwice-app-1  Recreated${NL}Container uptwice-app-1  Starting${NL}Container uptwice-app-1  Started"
+fi
+is "$output" "$expected" "no error output in compose up (#15580)"