remove cli dependence from internal

internal/forms/infra.go

@@ -1,7 +1,9 @@
 package forms
 
 import (
-	cmdutils "github.com/porter-dev/porter/cli/cmd/utils"
+	"math/rand"
+	"time"
+
 	"github.com/porter-dev/porter/internal/models"
 )
 
@@ -20,7 +22,7 @@ func (ce *CreateECRInfra) ToAWSInfra() (*models.AWSInfra, error) {
 	return &models.AWSInfra{
 		Kind:             models.AWSInfraECR,
 		ProjectID:        ce.ProjectID,
-		Suffix:           cmdutils.StringWithCharset(6, randCharset),
+		Suffix:           stringWithCharset(6, randCharset),
 		Status:           models.StatusCreating,
 		AWSIntegrationID: ce.AWSIntegrationID,
 	}, nil
@@ -39,7 +41,7 @@ func (ce *CreateEKSInfra) ToAWSInfra() (*models.AWSInfra, error) {
 	return &models.AWSInfra{
 		Kind:             models.AWSInfraEKS,
 		ProjectID:        ce.ProjectID,
-		Suffix:           cmdutils.StringWithCharset(6, randCharset),
+		Suffix:           stringWithCharset(6, randCharset),
 		Status:           models.StatusCreating,
 		AWSIntegrationID: ce.AWSIntegrationID,
 	}, nil
@@ -56,3 +58,16 @@ type DestroyECRInfra struct {
 type DestroyEKSInfra struct {
 	EKSName string `json:"eks_name" form:"required"`
 }
+
+// helpers for random string
+var seededRand *rand.Rand = rand.New(
+	rand.NewSource(time.Now().UnixNano()))
+
+// stringWithCharset returns a random string by pulling from a given charset
+func stringWithCharset(length int, charset string) string {
+	b := make([]byte, length)
+	for i := range b {
+		b[i] = charset[seededRand.Intn(len(charset))]
+	}
+	return string(b)
+}