Update tryserver configuration with new linux and arm bots.

BUG=353487
TBR=jarin@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/220453007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20406 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

PRESUBMIT.py

@@ -104,6 +104,12 @@ def GetPreferredTryMasters(project, change):
   return {
     'tryserver.v8': {
       'v8_linux_rel': set(['defaulttests']),
+      'v8_linux_dbg': set(['defaulttests']),
+      'v8_linux_nosnap_rel': set(['defaulttests']),
+      'v8_linux_nosnap_dbg': set(['defaulttests']),
+      'v8_linux64_rel': set(['defaulttests']),
+      'v8_linux_arm_dbg': set(['defaulttests']),
+      'v8_linux_arm64_rel': set(['defaulttests']),
       'v8_mac_rel': set(['defaulttests']),
       'v8_win_rel': set(['defaulttests']),
     },