roachtest/large-schema-benchmark: use SSL for web console API

Previously, we have been noticing flakes lately on certain scales of
this test due to the end point giving connection refused, and TLS errors
in the log files. To address this we are going to switch to the HTTPS
end point, which should hopefully help with the flake we have been
seeing.

Fixes: #131566
Fixes: #131556
Fixes: #131554

Release note: None

Author: fqazi

pkg/cmd/roachtest/tests/large_schema_benchmark.go

@@ -192,7 +192,7 @@ func registerLargeSchemaBenchmark(r registry.Registry, numTables int, isMultiReg
 			webConsoleURLs, err := c.ExternalAdminUIAddr(ctx, t.L(), c.Range(1, c.Spec().NodeCount-1))
 			require.NoError(t, err)
 			for urlIdx := range webConsoleURLs {
-				webConsoleURLs[urlIdx] = "http://" + webConsoleURLs[urlIdx]
+				webConsoleURLs[urlIdx] = "https://" + webConsoleURLs[urlIdx]
 			}
 			// Next startup the workload for our list of databases from earlier.
 			for dbListType, dbList := range [][]string{activeDBList, inactiveDBList} {