qa/rgw: hadoop suite targets centos_latest

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit a97d5bea42a40909aa4e9672505b9ad994cec184)

Conflicts:
    qa/suites/rgw/hadoop-s3a/s3a-hadoop.yaml (changes already backported
        via 6b5f212b9170dbd99779527b41be233b9d40b5e4)

diff --git a/qa/suites/rgw/hadoop-s3a/centos_latest.yaml b/qa/suites/rgw/hadoop-s3a/centos_latest.yaml
new file mode 120000 (symlink)
index 0000000..88b3a09
--- /dev/null
+++ b/qa/suites/rgw/hadoop-s3a/centos_latest.yaml
@@ -0,0 +1 @@
+../../../distros/supported/centos_latest.yaml
\ No newline at end of file