Digitalocean provider (#171)

* Implement Digitalocean provider
* Vendor digitalocean lib
* Enable SRV for Digitalocean and fix the tests
* Test cname etc. records pointing to the same domain

vendor/github.com/digitalocean/godo/account.go

@@ -0,0 +1,60 @@
+package godo
+
+import (
+	"net/http"
+
+	"github.com/digitalocean/godo/context"
+)
+
+// AccountService is an interface for interfacing with the Account
+// endpoints of the DigitalOcean API
+// See: https://developers.digitalocean.com/documentation/v2/#account
+type AccountService interface {
+	Get(context.Context) (*Account, *Response, error)
+}
+
+// AccountServiceOp handles communication with the Account related methods of
+// the DigitalOcean API.
+type AccountServiceOp struct {
+	client *Client
+}
+
+var _ AccountService = &AccountServiceOp{}
+
+// Account represents a DigitalOcean Account
+type Account struct {
+	DropletLimit    int    `json:"droplet_limit,omitempty"`
+	FloatingIPLimit int    `json:"floating_ip_limit,omitempty"`
+	Email           string `json:"email,omitempty"`
+	UUID            string `json:"uuid,omitempty"`
+	EmailVerified   bool   `json:"email_verified,omitempty"`
+	Status          string `json:"status,omitempty"`
+	StatusMessage   string `json:"status_message,omitempty"`
+}
+
+type accountRoot struct {
+	Account *Account `json:"account"`
+}
+
+func (r Account) String() string {
+	return Stringify(r)
+}
+
+// Get DigitalOcean account info
+func (s *AccountServiceOp) Get(ctx context.Context) (*Account, *Response, error) {
+
+	path := "v2/account"
+
+	req, err := s.client.NewRequest(ctx, http.MethodGet, path, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	root := new(accountRoot)
+	resp, err := s.client.Do(ctx, req, root)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return root.Account, resp, err
+}