Add Create Service Account api (#72)

adds new functionality for creating a service
account for a user, for this, an admin client
is created with the user credentials so that
the service account can be assigned to him.

This also updates to  minio RELEASE.2020-04-28T23-56-56Z

restapi/operations/user_api/create_service_account.go

@@ -0,0 +1,90 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+// This file is part of MinIO Console Server
+// Copyright (c) 2020 MinIO, Inc.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+package user_api
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the generate command
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/runtime/middleware"
+
+	"github.com/minio/mcs/models"
+)
+
+// CreateServiceAccountHandlerFunc turns a function with the right signature into a create service account handler
+type CreateServiceAccountHandlerFunc func(CreateServiceAccountParams, *models.Principal) middleware.Responder
+
+// Handle executing the request and returning a response
+func (fn CreateServiceAccountHandlerFunc) Handle(params CreateServiceAccountParams, principal *models.Principal) middleware.Responder {
+	return fn(params, principal)
+}
+
+// CreateServiceAccountHandler interface for that can handle valid create service account params
+type CreateServiceAccountHandler interface {
+	Handle(CreateServiceAccountParams, *models.Principal) middleware.Responder
+}
+
+// NewCreateServiceAccount creates a new http.Handler for the create service account operation
+func NewCreateServiceAccount(ctx *middleware.Context, handler CreateServiceAccountHandler) *CreateServiceAccount {
+	return &CreateServiceAccount{Context: ctx, Handler: handler}
+}
+
+/*CreateServiceAccount swagger:route POST /service-accounts UserAPI createServiceAccount
+
+Create Service Account
+
+*/
+type CreateServiceAccount struct {
+	Context *middleware.Context
+	Handler CreateServiceAccountHandler
+}
+
+func (o *CreateServiceAccount) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	route, rCtx, _ := o.Context.RouteInfo(r)
+	if rCtx != nil {
+		r = rCtx
+	}
+	var Params = NewCreateServiceAccountParams()
+
+	uprinc, aCtx, err := o.Context.Authorize(r, route)
+	if err != nil {
+		o.Context.Respond(rw, r, route.Produces, route, err)
+		return
+	}
+	if aCtx != nil {
+		r = aCtx
+	}
+	var principal *models.Principal
+	if uprinc != nil {
+		principal = uprinc.(*models.Principal) // this is really a models.Principal, I promise
+	}
+
+	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
+		o.Context.Respond(rw, r, route.Produces, route, err)
+		return
+	}
+
+	res := o.Handler.Handle(Params, principal) // actually handle the request
+
+	o.Context.Respond(rw, r, route.Produces, route, res)
+
+}