Rename animations/svg-attribute-interpolation tests to include all tested attributes

Rename animations/svg-attribute-interpolation tests to include all tested attributes

This change renames tests under animations/svg-attribute-interpolation to
include all tested attributes in the filename instead of just one.

BUG=530436
Committed: https://crrev.com/40bfc08af48c40b1b76e88754f0d4f10e554bb3d
Cr-Commit-Position: refs/heads/master@{#357308}

[alancutter (OOO until 2018), 2015-10-26 06:30:05]

alancutter@chromium.org changed reviewers:
+ ericwilligers@chromium.org

[alancutter (OOO until 2018), 2015-10-26 23:15:38]

The CQ bit was checked by alancutter@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-10-26 23:18:09]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1420483003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1420483003/1

[commit-bot: I haz the power, 2015-10-27 02:31:09]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-10-27 02:31:10]

Dry run: This issue passed the CQ dry run.

[alancutter (OOO until 2018), 2015-11-02 03:21:15]

alancutter@chromium.org changed reviewers:
+ dstockwell@chromium.org

[dstockwell, 2015-11-02 03:22:13]

lgtm

[alancutter (OOO until 2018), 2015-11-02 04:34:06]

The CQ bit was checked by alancutter@chromium.org

[commit-bot: I haz the power, 2015-11-02 04:34:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1420483003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1420483003/20001

[commit-bot: I haz the power, 2015-11-02 05:36:46]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-11-02 05:37:33]

Patchset 2 (id:??) landed as
https://crrev.com/40bfc08af48c40b1b76e88754f0d4f10e554bb3d
Cr-Commit-Position: refs/heads/master@{#357308}