Bye bye openapi (#1081)

* add DateTime sans mgo

* change all uses of strfmt.DateTime to common.DateTime, remove test strfmt usage

* remove api tests, system-test dep on api test

multiple reasons to remove the api tests:

* awkward dependency with fn_go meant generating bindings on a branched fn to
vendor those to test new stuff. this is at a minimum not at all intuitive,
worth it, nor a fun way to spend the finite amount of time we have to live.
* api tests only tested a subset of functionality that the server/ api tests
already test, and we risk having tests where one tests some thing and the
other doesn't. let's not. we have too many test suites as it is, and these
pretty much only test that we updated the fn_go bindings, which is actually a
hassle as noted above and the cli will pretty quickly figure out anyway.
* fn_go relies on openapi, which relies on mgo, which is deprecated and we'd
like to remove as a dependency. openapi is a _huge_ dep built in a NIH
fashion, that cannot simply remove the mgo dep as users may be using it.
we've now stolen their date time and otherwise killed usage of it in fn core,
for fn_go it still exists but that's less of a problem.

* update deps

removals:

* easyjson
* mgo
* go-openapi
* mapstructure
* fn_go
* purell
* go-validator

also, had to lock docker. we shouldn't use docker on master anyway, they
strongly advise against that. had no luck with latest version rev, so i locked
it to what we were using before. until next time.

the rest is just playing dep roulette, those end up removing a ton tho

* fix exec test to work

* account for john le cache

vendor/google.golang.org/api/cloudfunctions/v1/cloudfunctions-gen.go

@@ -1,4 +1,4 @@
-// Package cloudfunctions provides access to the Google Cloud Functions API.
+// Package cloudfunctions provides access to the Cloud Functions API.
 //
 // See https://cloud.google.com/functions
 //
@@ -232,6 +232,11 @@ type CloudFunction struct {
 	// globally and match pattern `projects/*/locations/*/functions/*`
 	Name string `json:"name,omitempty"`
 
+	// Runtime: The runtime in which the function is going to run. If empty,
+	// defaults to
+	// Node.js 6.
+	Runtime string `json:"runtime,omitempty"`
+
 	// ServiceAccountEmail: Output only. The email of the function's service
 	// account.
 	ServiceAccountEmail string `json:"serviceAccountEmail,omitempty"`
@@ -681,6 +686,11 @@ func (s *ListOperationsResponse) MarshalJSON() ([]byte, error) {
 
 // Location: A resource that represents Google Cloud Platform location.
 type Location struct {
+	// DisplayName: The friendly name for this location, typically a nearby
+	// city name.
+	// For example, "Tokyo".
+	DisplayName string `json:"displayName,omitempty"`
+
 	// Labels: Cross-service attributes for the location. For example
 	//
 	//     {"cloud.googleapis.com/region": "us-east1"}
@@ -700,7 +710,7 @@ type Location struct {
 	// For example: "projects/example-project/locations/us-east1"
 	Name string `json:"name,omitempty"`
 
-	// ForceSendFields is a list of field names (e.g. "Labels") to
+	// ForceSendFields is a list of field names (e.g. "DisplayName") to
 	// unconditionally include in API requests. By default, fields with
 	// empty values are omitted from API requests. However, any non-pointer,
 	// non-interface field appearing in ForceSendFields will be sent to the
@@ -708,10 +718,10 @@ type Location struct {
 	// used to include empty fields in Patch requests.
 	ForceSendFields []string `json:"-"`
 
-	// NullFields is a list of field names (e.g. "Labels") to include in API
-	// requests with the JSON null value. By default, fields with empty
-	// values are omitted from API requests. However, any field with an
-	// empty value appearing in NullFields will be sent to the server as
+	// NullFields is a list of field names (e.g. "DisplayName") to include
+	// in API requests with the JSON null value. By default, fields with
+	// empty values are omitted from API requests. However, any field with
+	// an empty value appearing in NullFields will be sent to the server as
 	// null. It is an error if a field in this list has a non-empty value.
 	// This may be used to include null fields in Patch requests.
 	NullFields []string `json:"-"`
@@ -2215,7 +2225,7 @@ type ProjectsLocationsFunctionsGenerateUploadUrlCall struct {
 // specified:
 //
 // * `content-type: application/zip`
-// * `x-google-content-length-range: 0,104857600`
+// * `x-goog-content-length-range: 0,104857600`
 func (r *ProjectsLocationsFunctionsService) GenerateUploadUrl(parent string, generateuploadurlrequest *GenerateUploadUrlRequest) *ProjectsLocationsFunctionsGenerateUploadUrlCall {
 	c := &ProjectsLocationsFunctionsGenerateUploadUrlCall{s: r.s, urlParams_: make(gensupport.URLParams)}
 	c.parent = parent
@@ -2309,7 +2319,7 @@ func (c *ProjectsLocationsFunctionsGenerateUploadUrlCall) Do(opts ...googleapi.C
 	}
 	return ret, nil
 	// {
-	//   "description": "Returns a signed URL for uploading a function source code.\nFor more information about the signed URL usage see:\nhttps://cloud.google.com/storage/docs/access-control/signed-urls.\nOnce the function source code upload is complete, the used signed\nURL should be provided in CreateFunction or UpdateFunction request\nas a reference to the function source code.\n\nWhen uploading source code to the generated signed URL, please follow\nthese restrictions:\n\n* Source file type should be a zip file.\n* Source file size should not exceed 100MB limit.\n\nWhen making a HTTP PUT request, these two headers need to be specified:\n\n* `content-type: application/zip`\n* `x-google-content-length-range: 0,104857600`",
+	//   "description": "Returns a signed URL for uploading a function source code.\nFor more information about the signed URL usage see:\nhttps://cloud.google.com/storage/docs/access-control/signed-urls.\nOnce the function source code upload is complete, the used signed\nURL should be provided in CreateFunction or UpdateFunction request\nas a reference to the function source code.\n\nWhen uploading source code to the generated signed URL, please follow\nthese restrictions:\n\n* Source file type should be a zip file.\n* Source file size should not exceed 100MB limit.\n\nWhen making a HTTP PUT request, these two headers need to be specified:\n\n* `content-type: application/zip`\n* `x-goog-content-length-range: 0,104857600`",
 	//   "flatPath": "v1/projects/{projectsId}/locations/{locationsId}/functions:generateUploadUrl",
 	//   "httpMethod": "POST",
 	//   "id": "cloudfunctions.projects.locations.functions.generateUploadUrl",