crostini: Up timeout for long container operations.

Bug: chromium:1024718
Test: Build + CQ
Change-Id: Icd5642e66beb4512090295e673421b5e002505e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1935572
Auto-Submit: David Munro <davidmunro@google.com>
Commit-Queue: Ryo Hashimoto <hashimoto@chromium.org>
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#719066}

chromeos/dbus/cicerone_client.cc

@@ -25,7 +25,7 @@ constexpr base::TimeDelta kDefaultTimeout = base::TimeDelta::FromMinutes(1);
 // How long to wait while doing more complex operations like starting or
 // creating a container.
 constexpr base::TimeDelta kLongOperationTimeout =
-    base::TimeDelta::FromMinutes(2);
+    base::TimeDelta::FromMinutes(3);
 }  // namespace
 
 class CiceroneClientImpl : public CiceroneClient {