test/system: Check if the container was created by 'create'

Checking the exit code, and the standard error and output streams of the
'create' command don't say anything about whether the container was
actually created.  Therefore, 'podman ps --all' is used to verify that.

Other tests already do this, so this change makes these tests consistent
with the rest.

#1715

Author: debarshiray

test/system/101-create.bats

@@ -45,6 +45,11 @@ teardown() {
 
   # shellcheck disable=SC2154
   assert [ ${#stderr_lines[@]} -eq 0 ]
+
+  run podman ps --all
+
+  assert_success
+  assert_output --regexp "Created[[:blank:]]+$default_container"
 }
 
 @test "create: With a custom name (using option --container)" {