internal/gomote: extend gomote max timeout

This extends the maximum amount of time a gomote instance can run. It
was previously 24 hours. It has now been set to approximately a week.

Fixes golang/go#69658

Change-Id: I01d7f10a5ba96b3213dbb5fdfeff66cbc7aa688b
Reviewed-on: https://go-review.googlesource.com/c/build/+/616062
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>

internal/gomote/swarming.go

@@ -987,7 +987,9 @@ func (ss *SwarmingServer) newSwarmingTask(ctx context.Context, name string, dime
 							Value: name,
 						},
 					},
-					ExecutionTimeoutSecs: 86400,
+					// The swarming limits state it must be between 30s and 601140s. This information is returned
+					// as part of an error message when you attempt a request with a value outside of these boundaries.
+					ExecutionTimeoutSecs: 601140,
 				},
 				ExpirationSecs:  86400,
 				WaitForCapacity: false,
@@ -1090,7 +1092,9 @@ func (ss *SwarmingServer) newSwarmingTaskWithGolangbuild(ctx context.Context, na
 							Value: properties.BuilderId,
 						},
 					},
-					ExecutionTimeoutSecs: 86400,
+					// The swarming limits state it must be between 30s and 601140s. This information is returned
+					// as part of an error message when you attempt a request with a value outside of these boundaries.
+					ExecutionTimeoutSecs: 601140,
 				},
 				ExpirationSecs:  86400,
 				WaitForCapacity: false,