[sdk] Try to resolve cipd describe gclient flatten issue

chrome-release bot is facing with flatten_buildspec.gclient flatten
exception which failed at running command
'cipd describe chromium/third_party/android_sdk/public/tools -version version:26.1.1-cr0'.
It is suspected that double tags of the instance version causing the issue.
This CL try to resolve the problem by updating the package of tools to a
new version.

Bug: 833123
Change-Id: Ibf23dfeb2dc5bb2008454d82bfaedb6b0603e97c
Reviewed-on: https://chromium-review.googlesource.com/1013743Reviewed-by: Michael Moss <mmoss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551105}

DEPS

@@ -190,7 +190,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling android_sdk_tools_version
   # and whatever else without interference from each other.
-  'android_sdk_tools_version': 'version:26.1.1-cr0',
+  'android_sdk_tools_version': 'version:26.1.1-cr9',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.