test: uniquify prom IDs (#7540)

config/config.go

@@ -683,7 +683,6 @@ func TestP2PConfig() *P2PConfig {
 	cfg.ListenAddress = "tcp://127.0.0.1:36656"
 	cfg.AllowDuplicateIP = true
 	cfg.FlushThrottleTimeout = 10 * time.Millisecond
-
 	return cfg
 }
 

config/toml.go

@@ -9,6 +9,7 @@ import (
 	"text/template"
 
 	tmos "github.com/tendermint/tendermint/libs/os"
+	tmrand "github.com/tendermint/tendermint/libs/rand"
 )
 
 // DefaultDirPerm is the default permissions used when creating directories.
@@ -549,6 +550,7 @@ func ResetTestRootWithChainID(testName string, chainID string) (*Config, error)
 	}
 
 	config := TestConfig().SetRoot(rootDir)
+	config.Instrumentation.Namespace = fmt.Sprintf("%s_%s_%s", testName, chainID, tmrand.Str(16))
 	return config, nil
 }