update servo label to servo_state with (WORKING, BROKEN)

Bug:chromium:1045191
TEST:unittest
Change-Id: I617bf391feae72832b21314ba4659864716c2b07
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2037908
Tested-by: Otabek Kasimov <otabek@google.com>
Commit-Queue: Otabek Kasimov <otabek@google.com>
Reviewed-by: Xixuan Wu <xixuan@chromium.org>
Auto-Submit: Otabek Kasimov <otabek@google.com>
diff --git a/.gitignore b/.gitignore
index 127af18..6df12eb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -75,3 +75,5 @@
 
 # Present on Skylab drones
 /swarming_state/
+
+.idea
\ No newline at end of file