[autotest] Add get_hostname_addr_map() (squashed)

BUG=chromium:666022
TEST=None

!Change-Id: I9b3385fd8fba91f67fe968bb7bf85d39792e8c16

[autotest] Add hostname property to devserver

BUG=None
TEST=None

!Change-Id: I7fcd9b92d3c086ea9a8e6a4749f65b65a827855f

[autotest] Extract get_hostname() function

BUG=None
TEST=None

!Change-Id: I45f7a8e4f3f57beb77df6766fbe5747ebe295613

[autotest] Replace get_server_name with get_hostname

BUG=None
TEST=None

!Change-Id: I75ebfe05ccd1f4d9209d68bc0e5f2db691558a74

[autotest] Add _reverse_lookup_from_config()

BUG=chromium:666022
TEST=None

!Change-Id: I1ea54296cc5a7a67981338c1c3d4057b065fa279

[autotest] Attempt to look up devserver hostname for metrics

BUG=chromium:666022
TEST=None

!Change-Id: I3dec24d4874de66466a373c97de5364c4b1ba557

[autotest] Make get_section_as_dict() ordered

The ordering information is preserved in the config file, so may as
well preserve it here.

BUG=chromium:666022
TEST=None

!Change-Id: I46b9fa47fa87b789a4e63563797a4327ac308bef

[autotest] Clarify _reverse_lookup behavior for duplicates

BUG=chromium:666022
TEST=None

!Change-Id: I839ba7b55005b6137fa03887854ea59dfee49dfa

Change-Id: I0aeb05d16d8fc8b98987dc232da8928ddd9fdb9f
Reviewed-on: https://chromium-review.googlesource.com/424913
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
diff --git a/server/cros/telemetry_runner.py b/server/cros/telemetry_runner.py
index 69529fd..806df91 100644
--- a/server/cros/telemetry_runner.py
+++ b/server/cros/telemetry_runner.py
@@ -209,8 +209,7 @@
         """
         telemetry_cmd = []
         if self._devserver:
-            devserver_hostname = dev_server.DevServer.get_server_name(
-                    self._devserver.url())
+            devserver_hostname = self._devserver.hostname
             telemetry_cmd.extend(['ssh', devserver_hostname])
 
         if self._telemetry_on_dut:
@@ -250,8 +249,7 @@
         devserver_hostname = ''
         if perf_results_dir:
             if self._devserver:
-                devserver_hostname = dev_server.DevServer.get_server_name(
-                        self._devserver.url()) + ':'
+                devserver_hostname = self._devserver.hostname + ':'
             if self._telemetry_on_dut:
                 src = ('root@%s:%s/results-chart.json' %
                        (self._host.hostname, DUT_CHROME_ROOT))