luci_config: Request content only when desired.

luci_config: Request content only when desired.

Don't ask the config backend to load content when the user doesn't
actually ask for content.

BUG=chromium:682465
TEST=unit

Review-Url: https://codereview.chromium.org/2642343003
Committed: https://github.com/luci/luci-go/commit/ee266e37c9d7e787fe9d9d72348136ada6287340

[dnj, 2017-01-21 01:43:00]

dnj@chromium.org changed reviewers:
+ iannucci@chromium.org

[dnj, 2017-01-21 01:43:00]

PTAL

[iannucci, 2017-01-21 03:35:59]

lgtm

[dnj, 2017-01-21 03:39:50]

The CQ bit was checked by dnj@chromium.org

[commit-bot: I haz the power, 2017-01-21 03:39:53]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-21 03:51:45]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484969990134550, "parent_rev":
"879672eba7a6a9dd58326c99269cf50ea456115a", "commit_rev":
"ee266e37c9d7e787fe9d9d72348136ada6287340"}

[commit-bot: I haz the power, 2017-01-21 03:51:48]

Description was changed from

==========
luci_config: Request content only when desired.

Don't ask the config backend to load content when the user doesn't
actually ask for content.

BUG=chromium:682465
TEST=unit
==========

to

==========
luci_config: Request content only when desired.

Don't ask the config backend to load content when the user doesn't
actually ask for content.

BUG=chromium:682465
TEST=unit

Review-Url: https://codereview.chromium.org/2642343003
Committed:
https://github.com/luci/luci-go/commit/ee266e37c9d7e787fe9d9d72348136ada6287340
==========

[commit-bot: I haz the power, 2017-01-21 03:51:50]

Committed patchset #1 (id:1) as
https://github.com/luci/luci-go/commit/ee266e37c9d7e787fe9d9d72348136ada6287340