swarm: ctx propagation; bmt fixes; pss generic notification framework (#17150)

* cmd/swarm: minor cli flag text adjustments

* swarm/api/http: sticky footer for swarm landing page using flex

* swarm/api/http: sticky footer for error pages and fix for multiple choices

* cmd/swarm, swarm/storage, swarm: fix  mingw on windows test issues

* cmd/swarm: update description of swarm cmd

* swarm: added network ID test

* cmd/swarm: support for smoke tests on the production swarm cluster

* cmd/swarm/swarm-smoke: simplify cluster logic as per suggestion

* swarm: propagate ctx to internal apis (#754)

* swarm/metrics: collect disk measurements

* swarm/bmt: fix io.Writer interface

  * Write now tolerates arbitrary variable buffers
  * added variable buffer tests
  * Write loop and finalise optimisation
  * refactor / rename
  * add tests for empty input

* swarm/pss: (UPDATE) Generic notifications package (#744)

swarm/pss: Generic package for creating pss notification svcs

* swarm: Adding context to more functions

* swarm/api: change colour of landing page in templates

* swarm/api: change landing page to react to enter keypress

swarm/fuse/swarmfs_test.go

@@ -20,6 +20,7 @@ package fuse
 
 import (
 	"bytes"
+	"context"
 	"crypto/rand"
 	"flag"
 	"fmt"
@@ -110,7 +111,7 @@ func createTestFilesAndUploadToSwarm(t *testing.T, api *api.API, files map[strin
 	}
 
 	//upload directory to swarm and return hash
-	bzzhash, err := api.Upload(uploadDir, "", toEncrypt)
+	bzzhash, err := api.Upload(context.TODO(), uploadDir, "", toEncrypt)
 	if err != nil {
 		t.Fatalf("Error uploading directory %v: %vm encryption: %v", uploadDir, err, toEncrypt)
 	}