chore: Adjust e2e tests for createdAt and createdBy new v1alpha Proje…

…ct.Spec fields (#144)

## Motivation

With the introduction of new server-side computed fields for v1alpha
Project.Spec: `createdAt` and `createdBy` the tests started failing as
the helper function `_assert_objects_existence` was comparing almost the
whole object.
This is too much for a simple assertion that checks if the object was
actually applied, so I added additional filter to re-map the objects,
extracting the basic minimum for comparison.

## Related Changes

- nobl9/nobl9-go#422

## Testing

Run `make test/e2e`, remember about supplying the right env vars OR run
https://github.com/nobl9/sloctl/actions/workflows/e2e-tests-dispatch.yml
with this branch as target.

test/test_helper/load.bash

@@ -97,16 +97,19 @@ _assert_objects_existence() {
 		case "$1" in
 		apply)
 			run_sloctl "${args[*]}"
+			refute_output --partial "No resources found"
+	    # We can't retrieve the same object we applied so we need to compare the minimum.
+	    filter='[.[] | {"name": .metadata.name, "project": .metadata.project, "labels": .metadata.labels, "annotations": .metadata.annotations}] | sort_by(.name, .project)'
 			# shellcheck disable=2154
-			have=$(yq --sort-keys -y '[.[] | del(.status)]' <<<"$output")
+			have=$(yq --sort-keys -y "$filter" <<<"$output")
 			want=$(yq --sort-keys -y '[
           .[] | select(.kind == "'"$kind"'") |
           select(.metadata.name == "'"$name"'") |
           if .metadata.project then
             select(.metadata.project == "'"$project"'")
           else
             .
-          end]' <<<"$2")
+          end] | '"$filter"'' <<<"$2")
 			assert_equal "$have" "$want"
 			;;
 		delete)