chore: fix flakiness in gofakeit usage with additional random string (#10385)

# Which Problems Are Solved

Flakiness in integration tests regarding gofakeit functions, which
provided the same names on 2 different occasions.

# How the Problems Are Solved

Attach a random string to the provided names, so that they are not
dependent on the gofakeit code.

# Additional Changes

None

# Additional Context

None

---------

Co-authored-by: Marco A. <marco@zitadel.com>

internal/integration/name.go

@@ -0,0 +1,41 @@
+package integration
+
+import "github.com/brianvoe/gofakeit/v6"
+
+// company private function to add a random string to the gofakeit.Company function
+func company() string {
+	return gofakeit.Company() + "-" + RandString(5)
+}
+
+func OrganizationName() string {
+	return company()
+}
+
+// appName private function to add a random string to the gofakeit.AppName function
+func appName() string {
+	return gofakeit.AppName() + "-" + RandString(5)
+}
+
+func TargetName() string {
+	return appName()
+}
+
+func ApplicationName() string {
+	return appName()
+}
+
+func ProjectName() string {
+	return appName()
+}
+
+func IDPName() string {
+	return appName()
+}
+
+func RoleKey() string {
+	return appName()
+}
+
+func RoleDisplayName() string {
+	return appName()
+}

internal/integration/rand.go

@@ -6,7 +6,7 @@ import (
 )
 
 func init() {
-	rand.Seed(time.Now().UnixNano())
+	rand.NewSource(time.Now().UnixNano())
 }
 
 var letterRunes = []rune("abcdefghijklmnopqrstuvwxyz")