test(e2e): Fix failure in migration test (#5277)

* test(e2e): Fix log path to avoid error

* test(e2e): Be explicit about port definition to avoid dockertest issue

* test(e2e): Add check for health

testing/internal/e2e/tests/database/testdata/boundary-config.hcl

@@ -91,7 +91,7 @@ events {
     ]
 
     file {
-      path      = "/logs"
+      path      = "/boundary/logs"
       file_name = "audit.log"
     }