Revert "Rename SSHHost.run to SSHHost.run_very_slowly"

This reverts commit 672fb5f8806694d9476f016c0f1094da29120f31.

Reason for revert: Broke android tests: crbug.com/737316

Original change's description:
> Rename SSHHost.run to SSHHost.run_very_slowly
> 
> This CL renames several places that calls SSHHost.run directly to SSHHost.run_very_slowly.
> In addition, it warns the caller with a more verbose server stack message now.
> 
> BUG=chromium:735653
> TEST=test_that dut graphics_Sanity
>      ./utils/unittest_suite.py --debug
> CQ-DEPEND=I2a434782b9b7ed7a3d31289d9925f3c8502a6d9f
> 
> Change-Id: Icd22fe9bcc4b5a47320478932194a8b535f4a936
> Reviewed-on: https://chromium-review.googlesource.com/545116
> Commit-Ready: Po-Hsien Wang <pwang@chromium.org>
> Tested-by: Po-Hsien Wang <pwang@chromium.org>
> Reviewed-by: Ilja H. Friedel <ihf@chromium.org>

Bug: chromium:735653
Change-Id: If57cd6103d73bc1f0335866d8c130953754df0d9
Reviewed-on: https://chromium-review.googlesource.com/550970
Reviewed-by: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Trybot-Ready: Allen Li <ayatane@chromium.org>
diff --git a/server/hosts/abstract_ssh.py b/server/hosts/abstract_ssh.py
index c7ca60a..c3a1a19 100644
--- a/server/hosts/abstract_ssh.py
+++ b/server/hosts/abstract_ssh.py
@@ -121,8 +121,7 @@
         Check if rsync is available on the remote host.
         """
         try:
-            self.run_very_slowly("rsync --version",
-                                 stdout_tee=None, stderr_tee=None)
+            self.run("rsync --version", stdout_tee=None, stderr_tee=None)
         except error.AutoservRunError:
             return False
         return True
@@ -523,14 +522,13 @@
         """
         ctimeout = min(timeout, connect_timeout or timeout)
         try:
-            self.run_very_slowly(base_cmd, timeout=timeout,
-                                 connect_timeout=ctimeout,
-                                 ssh_failure_retry_ok=True)
+            self.run(base_cmd, timeout=timeout, connect_timeout=ctimeout,
+                     ssh_failure_retry_ok=True)
         except error.AutoservSSHTimeout:
             msg = "Host (ssh) verify timed out (timeout = %d)" % timeout
             raise error.AutoservSSHTimeout(msg)
         except error.AutoservSshPermissionDeniedError:
-            # let AutoservSshPermissionDeniedError be visible to the callers
+            #let AutoservSshPermissionDeniedError be visible to the callers
             raise
         except error.AutoservRunError, e:
             # convert the generic AutoservRunError into something more