Fix lint errors

cgroup/nolinux.go

@@ -24,6 +24,6 @@ package cgroup
 import "errors"
 
 // GetMemoryLimit - Not implemented in non-linux platforms
-func GetMemoryLimit(pid int) (limit uint64, err error) {
+func GetMemoryLimit(_ int) (limit uint64, err error) {
 	return limit, errors.New("Not implemented for non-linux platforms")
 }

tier-azure.go

@@ -43,20 +43,20 @@ type TierAzure struct {
 	SPAuth ServicePrincipalAuth `json:",omitempty"`
 }
 
-func (t TierAzure) Validate() error {
-	if t.AccountName == "" && t.AccountKey != "" || t.AccountName != "" && t.AccountKey == "" {
+func (ti TierAzure) Validate() error {
+	if ti.AccountName == "" && ti.AccountKey != "" || ti.AccountName != "" && ti.AccountKey == "" {
 		return errors.New("both account name and key need to be provided")
 	}
 
-	if t.AccountName != "" {
+	if ti.AccountName != "" {
 		return nil
 	}
 
-	if t.SPAuth.TenantID == "" && t.SPAuth.ClientID == "" && t.SPAuth.ClientSecret == "" {
+	if ti.SPAuth.TenantID == "" && ti.SPAuth.ClientID == "" && ti.SPAuth.ClientSecret == "" {
 		return errors.New("either static credentials or service principal credentials are required")
 	}
 
-	if t.SPAuth.TenantID == "" || t.SPAuth.ClientID == "" || t.SPAuth.ClientSecret == "" {
+	if ti.SPAuth.TenantID == "" || ti.SPAuth.ClientID == "" || ti.SPAuth.ClientSecret == "" {
 		return errors.New("the tenant and the client ID and the secret are required")
 	}
 

tier-gcs.go

@@ -36,11 +36,11 @@ type TierGCS struct {
 	StorageClass string `json:",omitempty"`
 }
 
-func (t TierGCS) Validate() error {
-	if t.Creds == "" {
+func (gcs TierGCS) Validate() error {
+	if gcs.Creds == "" {
 		return errors.New("the credentials file cannot be empty")
 	}
-	if t.Bucket == "" {
+	if gcs.Bucket == "" {
 		return errors.New("the bucket name is required")
 	}
 	return nil