[Preset] Add new Linux smoketest preset, Linux preset without longtest

Author: shahmishal

utils/build-presets.ini

@@ -815,6 +815,24 @@ mixin-preset=buildbot_linux
 [preset: buildbot_linux_1404]
 mixin-preset=buildbot_linux
 
+[preset: buildbot_linux,smoketest]
+mixin-preset=mixin_linux_installation
+build-subdir=buildbot_linux
+lldb
+release
+test
+validation-test
+foundation
+libdispatch
+lit-args=-v
+
+dash-dash
+
+install-foundation
+install-libdispatch
+reconfigure
+
+
 [preset: buildbot_linux_1404_no_lldb]
 mixin-preset=buildbot_incremental_linux
 build-subdir=buildbot_linux