Update key names, instead of recreating them (#9)

Update the name of a key using:
https://docs.sentry.io/api/projects/put-project-key-details/

client.go

@@ -223,6 +223,10 @@ type CreateKeyParams struct {
 	Name string `json:"name"`
 }
 
+type UpdateKeyParams struct {
+	Name string `json:"name"`
+}
+
 func (c *Client) GetKey(organizationSlug, projectSlug, keyID string) (*Key, *http.Response, error) {
 	var key Key
 
@@ -253,6 +257,14 @@ func (c *Client) CreateKey(organizationSlug, projectSlug string, params *CreateK
 	return &key, resp, relevantError(err, apiErr)
 }
 
+func (c *Client) UpdateKey(organizationSlug, projectSlug string, keyID string, params *UpdateKeyParams) (*Key, *http.Response, error) {
+	var key Key
+	apiErr := make(APIError)
+	path := fmt.Sprintf("0/projects/%s/%s/keys/%s/", organizationSlug, projectSlug, keyID)
+	resp, err := c.sling.New().Put(path).BodyJSON(params).Receive(&key, &apiErr)
+	return &key, resp, relevantError(err, apiErr)
+}
+
 func (c *Client) DeleteKey(organizationSlug, projectSlug, keyID string) (*http.Response, error) {
 	apiErr := make(APIError)
 	path := fmt.Sprintf("0/projects/%s/%s/keys/%s/", organizationSlug, projectSlug, keyID)

resource_sentry_key.go

@@ -12,6 +12,7 @@ func resourceSentryKey() *schema.Resource {
 	return &schema.Resource{
 		Create: resourceSentryKeyCreate,
 		Read:   resourceSentryKeyRead,
+		Update: resourceSentryKeyUpdate,
 		Delete: resourceSentryKeyDelete,
 		Importer: &schema.ResourceImporter{
 			State: resourceKeyImporter,
@@ -33,7 +34,6 @@ func resourceSentryKey() *schema.Resource {
 			"name": &schema.Schema{
 				Type:        schema.TypeString,
 				Required:    true,
-				ForceNew:    true,
 				Description: "The name of the key",
 			},
 			"dsn_secret": &schema.Schema{
@@ -94,6 +94,25 @@ func resourceSentryKeyRead(d *schema.ResourceData, meta interface{}) error {
 	return nil
 }
 
+func resourceSentryKeyUpdate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*Client)
+
+	id := d.Id()
+	org := d.Get("organization").(string)
+	project := d.Get("project").(string)
+	params := &UpdateKeyParams{
+		Name: d.Get("name").(string),
+	}
+
+	key, _, err := client.UpdateKey(org, project, id, params)
+	if err != nil {
+		return err
+	}
+
+	d.SetId(key.ID)
+	return resourceSentryKeyRead(d, meta)
+}
+
 func resourceSentryKeyDelete(d *schema.ResourceData, meta interface{}) error {
 	client := meta.(*Client)