git: openjdk/leyden: premain: Add targets to run warmup test using new single-step workflow

[duke]

Changeset: 057360f9
Author:    Ashutosh Mehra <asmehra at redhat.com>
Date:      2024-04-08 12:28:23 +0000
URL:       https://git.openjdk.org/leyden/commit/057360f9e778ce153ab49509056bc6c01ca03122

Add targets to run warmup test using new single-step workflow

Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>

! test/hotspot/jtreg/premain/spring-petclinic/WarmupMakefile