[task scheduler] Change path of buildbucket prpc endpoints

Bug: b/288158829
Change-Id: I7a5d2dea8e859597c8be9418a9d7593f4e8b78f7
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/791237
Auto-Submit: Eric Boren <borenet@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>

task_scheduler/go/task-scheduler-bbfe/main.go

diff --git a/task_scheduler/go/task-scheduler-bbfe/main.go b/task_scheduler/go/task-scheduler-bbfe/main.go
index 3861e16..03ac6d9 100644
--- a/task_scheduler/go/task-scheduler-bbfe/main.go
+++ b/task_scheduler/go/task-scheduler-bbfe/main.go
@@ -44,7 +44,7 @@
 func runServer(serverURL string, bbHandler http.Handler, plogin alogin.Login) {
 	r := chi.NewRouter()
 	if bbHandler != nil {
-		r.Handle("/bb/*", http.StripPrefix("/bb/", alogin.ForceRole(bbHandler, plogin, roles.Buildbucket)))
+		r.Handle("/prpc/*", alogin.ForceRole(bbHandler, plogin, roles.Buildbucket))
 	}
 
 	h := httputils.LoggingRequestResponse(r)

task_scheduler/go/task-scheduler-fe/main.go

diff --git a/task_scheduler/go/task-scheduler-fe/main.go b/task_scheduler/go/task-scheduler-fe/main.go
index 7bc726a..feb437a 100644
--- a/task_scheduler/go/task-scheduler-fe/main.go
+++ b/task_scheduler/go/task-scheduler-fe/main.go
@@ -312,7 +312,7 @@
 	r.HandleFunc("/res/*", httputils.MakeResourceHandler(*resourcesDir))
 	r.HandleFunc("/_/login/status", alogin.LoginStatusHandler(plogin))
 	if bbHandler != nil {
-		r.Handle("/bb/*", http.StripPrefix("/bb/", alogin.ForceRole(bbHandler, plogin, roles.Buildbucket)))
+		r.Handle("/prpc/*", alogin.ForceRole(bbHandler, plogin, roles.Buildbucket))
 	}
 
 	h := httputils.LoggingRequestResponse(r)