lint: fix ungrouped-imports warnings

Newer pylint will warn when modules aren't grouped properly.
Since we do this in pretty much every chromite module, fix the
two minor deviations.

BUG=chromium:863669
TEST=precq passes

Change-Id: I1d7d71177a96c8189c4eae0141f30b9775d5a757
Reviewed-on: https://chromium-review.googlesource.com/1139133
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Alex Klein <saklein@chromium.org>
diff --git a/scripts/sysmon/mainlib.py b/scripts/sysmon/mainlib.py
index f98318e..40a84c9 100644
--- a/scripts/sysmon/mainlib.py
+++ b/scripts/sysmon/mainlib.py
@@ -14,8 +14,6 @@
 from chromite.lib import cros_logging as logging
 from chromite.lib import metrics
 from chromite.lib import ts_mon_config
-from infra_libs.ts_mon.common import interface
-
 from chromite.scripts.sysmon import git_metrics
 from chromite.scripts.sysmon import loop
 from chromite.scripts.sysmon import net_metrics
@@ -24,6 +22,8 @@
 from chromite.scripts.sysmon import prod_metrics
 from chromite.scripts.sysmon import puppet_metrics
 from chromite.scripts.sysmon import system_metrics
+from infra_libs.ts_mon.common import interface
+
 
 logger = logging.getLogger(__name__)