Update traefik dependencies (docker/docker and related) (#1823)

Update traefik dependencies (docker/docker and related)

- Update dependencies
- Fix compilation problems
- Remove vdemeester/docker-events (in docker api now)
- Remove `integration/vendor`
- Use `testImport`
- update some deps.
- regenerate the lock from scratch (after a `glide cc`)

vendor/github.com/google/go-github/github/github.go

@@ -27,7 +27,7 @@ import (
 )
 
 const (
-	libraryVersion = "6"
+	libraryVersion = "8"
 	defaultBaseURL = "https://api.github.com/"
 	uploadBaseURL  = "https://uploads.github.com/"
 	userAgent      = "go-github/" + libraryVersion
@@ -92,11 +92,14 @@ const (
 	// https://developer.github.com/changes/2017-01-05-commit-search-api/
 	mediaTypeCommitSearchPreview = "application/vnd.github.cloak-preview+json"
 
-	// https://developer.github.com/changes/2016-12-14-reviews-api/
-	mediaTypePullRequestReviewsPreview = "application/vnd.github.black-cat-preview+json"
-
 	// https://developer.github.com/changes/2017-02-28-user-blocking-apis-and-webhook/
 	mediaTypeBlockUsersPreview = "application/vnd.github.giant-sentry-fist-preview+json"
+
+	// https://developer.github.com/changes/2017-02-09-community-health/
+	mediaTypeRepositoryCommunityHealthMetricsPreview = "application/vnd.github.black-panther-preview+json"
+
+	// https://developer.github.com/changes/2017-05-23-coc-api/
+	mediaTypeCodesOfConductPreview = "application/vnd.github.scarlet-witch-preview+json"
 )
 
 // A Client manages communication with the GitHub API.
@@ -123,11 +126,11 @@ type Client struct {
 	// Services used for talking to different parts of the GitHub API.
 	Activity       *ActivityService
 	Admin          *AdminService
+	Apps           *AppsService
 	Authorizations *AuthorizationsService
 	Gists          *GistsService
 	Git            *GitService
 	Gitignores     *GitignoresService
-	Integrations   *IntegrationsService
 	Issues         *IssuesService
 	Organizations  *OrganizationsService
 	Projects       *ProjectsService
@@ -212,11 +215,11 @@ func NewClient(httpClient *http.Client) *Client {
 	c.common.client = c
 	c.Activity = (*ActivityService)(&c.common)
 	c.Admin = (*AdminService)(&c.common)
+	c.Apps = (*AppsService)(&c.common)
 	c.Authorizations = (*AuthorizationsService)(&c.common)
 	c.Gists = (*GistsService)(&c.common)
 	c.Git = (*GitService)(&c.common)
 	c.Gitignores = (*GitignoresService)(&c.common)
-	c.Integrations = (*IntegrationsService)(&c.common)
 	c.Issues = (*IssuesService)(&c.common)
 	c.Licenses = (*LicensesService)(&c.common)
 	c.Migrations = (*MigrationService)(&c.common)
@@ -312,6 +315,7 @@ type Response struct {
 }
 
 // newResponse creates a new Response for the provided http.Response.
+// r must not be nil.
 func newResponse(r *http.Response) *Response {
 	response := &Response{Response: r}
 	response.populatePageValues()
@@ -396,7 +400,10 @@ func (c *Client) Do(ctx context.Context, req *http.Request, v interface{}) (*Res
 
 	// If we've hit rate limit, don't make further requests before Reset time.
 	if err := c.checkRateLimitBeforeDo(req, rateLimitCategory); err != nil {
-		return nil, err
+		return &Response{
+			Response: err.Response,
+			Rate:     err.Rate,
+		}, err
 	}
 
 	resp, err := c.client.Do(req)
@@ -457,7 +464,7 @@ func (c *Client) Do(ctx context.Context, req *http.Request, v interface{}) (*Res
 // current client state in order to quickly check if *RateLimitError can be immediately returned
 // from Client.Do, and if so, returns it so that Client.Do can skip making a network API call unnecessarily.
 // Otherwise it returns nil, and Client.Do should proceed normally.
-func (c *Client) checkRateLimitBeforeDo(req *http.Request, rateLimitCategory rateLimitCategory) error {
+func (c *Client) checkRateLimitBeforeDo(req *http.Request, rateLimitCategory rateLimitCategory) *RateLimitError {
 	c.rateMu.Lock()
 	rate := c.rateLimits[rateLimitCategory]
 	c.rateMu.Unlock()