fix add cluster api with ipv6 appending [ in secret name (argoproj#8204)

URIToSecretName method hashes a uri address returns a secret name \n if ipv6 uri is provided, then the method is appending '[' in secret name \n this is causing an error like Secret "cluster-[fcff-1931808423" is invalid \n fixed this by trimming [

Signed-off-by: zillani <[email protected]>

util/db/secrets.go

@@ -158,5 +158,6 @@ func URIToSecretName(uriType, uri string) (string, error) {
 	h := fnv.New32a()
 	_, _ = h.Write([]byte(uri))
 	host := strings.ToLower(strings.Split(parsedURI.Host, ":")[0])
+	host = strings.Replace(host, "[", "", -1)
 	return fmt.Sprintf("%s-%s-%v", uriType, host, h.Sum32()), nil
 }