dev: roachprod-stress artifacts aren't in the right place

[ajwerner]

Is your feature request related to a problem? Please describe.
Here we assume that we have an artifacts directory where stuff lives, but the artifacts themselves aren't in the proper location.

cockroach/pkg/cmd/dev/roachprod_stress.go

Line 129 in ecc37d8

roachprodStressArgs := []string{cluster, fmt.Sprintf("./%s", pkg), "-testbin", filepath.Join(workspace, "artifacts", testTargetBasename), "-stressbin", filepath.Join(workspace, "artifacts", "stress"), "-libdir", filepath.Join(workspace, "artifacts", "libgeos", "lib")}

I assume this comes from stageArtifacts, but the geos libs are not in artifacts/libgeos/lib/..., rather, they are in artifacts directly.

$ ls -la artifacts/
total 843852
drwxr-xr-x   8 ajwerner ajwerner      4096 Sep  8 19:43 .
drwxrwxr-x  43 ajwerner ajwerner      4096 Sep  8 19:55 ..
drwxr-xr-x   3 ajwerner ajwerner      4096 Aug 23 16:40 _runner-logs
drwxr-xr-x   3 ajwerner ajwerner      4096 Mar 22 18:39 acceptance
-rwxrwxrwx   1 ajwerner ajwerner 362715656 Jul 28 18:14 cockroach
-rwxrwxrwx   1 ajwerner ajwerner 343813208 Mar 22 18:04 cockroach-short
-rw-rw-r--   1 ajwerner ajwerner       592 Jun 23 14:45 dev.log
drwx------ 965 ajwerner ajwerner     20480 Mar 28 14:48 go-build2658530123
drwxr-xr-x   3 ajwerner ajwerner      4096 Mar 23 13:40 knex
-rwxrwxrwx   1 ajwerner ajwerner   2610888 Sep  8 19:56 libgeos.so
-rwxrwxrwx   1 ajwerner ajwerner    356184 Sep  8 19:56 libgeos_c.so
drwxr-xr-x   3 ajwerner ajwerner      4096 Aug 23 16:38 schemachange
-rwxrwxrwx   1 ajwerner ajwerner 151838184 Sep  8 19:56 schemachange_test
-rwxrwxrwx   1 ajwerner ajwerner   2701606 Sep  8 19:56 stress
drwxr-xr-x   3 ajwerner ajwerner      4096 Mar 18 01:12 tpcc

I'm not totally certain how they end up here.

Jira issue: CRDB-19457
Epic CRDB-15061