run 'go get -u; make revendor'

Signed-off-by: Stephan Renatus <srenatus@chef.io>

vendor/google.golang.org/appengine/internal/identity_classic.go

@@ -12,16 +12,50 @@ import (
 	netcontext "golang.org/x/net/context"
 )
 
-func DefaultVersionHostname(ctx netcontext.Context) string {
-	return appengine.DefaultVersionHostname(fromContext(ctx))
+func init() {
+	appengineStandard = true
 }
 
-func RequestID(ctx netcontext.Context) string  { return appengine.RequestID(fromContext(ctx)) }
-func Datacenter(_ netcontext.Context) string   { return appengine.Datacenter() }
-func ServerSoftware() string                   { return appengine.ServerSoftware() }
-func ModuleName(ctx netcontext.Context) string { return appengine.ModuleName(fromContext(ctx)) }
-func VersionID(ctx netcontext.Context) string  { return appengine.VersionID(fromContext(ctx)) }
-func InstanceID() string                       { return appengine.InstanceID() }
-func IsDevAppServer() bool                     { return appengine.IsDevAppServer() }
+func DefaultVersionHostname(ctx netcontext.Context) string {
+	c := fromContext(ctx)
+	if c == nil {
+		panic(errNotAppEngineContext)
+	}
+	return appengine.DefaultVersionHostname(c)
+}
 
-func fullyQualifiedAppID(ctx netcontext.Context) string { return fromContext(ctx).FullyQualifiedAppID() }
+func Datacenter(_ netcontext.Context) string { return appengine.Datacenter() }
+func ServerSoftware() string                 { return appengine.ServerSoftware() }
+func InstanceID() string                     { return appengine.InstanceID() }
+func IsDevAppServer() bool                   { return appengine.IsDevAppServer() }
+
+func RequestID(ctx netcontext.Context) string {
+	c := fromContext(ctx)
+	if c == nil {
+		panic(errNotAppEngineContext)
+	}
+	return appengine.RequestID(c)
+}
+
+func ModuleName(ctx netcontext.Context) string {
+	c := fromContext(ctx)
+	if c == nil {
+		panic(errNotAppEngineContext)
+	}
+	return appengine.ModuleName(c)
+}
+func VersionID(ctx netcontext.Context) string {
+	c := fromContext(ctx)
+	if c == nil {
+		panic(errNotAppEngineContext)
+	}
+	return appengine.VersionID(c)
+}
+
+func fullyQualifiedAppID(ctx netcontext.Context) string {
+	c := fromContext(ctx)
+	if c == nil {
+		panic(errNotAppEngineContext)
+	}
+	return c.FullyQualifiedAppID()
+}