get_firmware_version: Update regex pattern for Intel's WiFi firmware version.

BUG=None
TEST=Used pythex.org to confirm correct regex pattern

Change-Id: I34c5fb54b3b80953029a8fde126992588ba9989b
Reviewed-on: https://chromium-review.googlesource.com/321451
Commit-Ready: Tien Chang <tienchang@chromium.org>
Tested-by: Tien Chang <tienchang@chromium.org>
Reviewed-by: Bindu Mahadev <bmahadev@chromium.org>
diff --git a/server/cros/network/chaos_clique_utils.py b/server/cros/network/chaos_clique_utils.py
index bb17577..fcbe336 100644
--- a/server/cros/network/chaos_clique_utils.py
+++ b/server/cros/network/chaos_clique_utils.py
@@ -340,7 +340,7 @@
             elif 'mwifiex' in result_str:
                 pattern = '%s [\d.]+ \([\w.]+\)' % firmware_ver
             elif 'loaded firmware version' in result_str:
-                pattern = '(\d+\.\d+\.\d+.\d)'
+                pattern = '(\d+\.\d+\.\d+)'
             elif 'Firmware version' in result_str:
                 pattern = '\d+\.\d+\.\d+ \([\w.]+\)'
             else: