Increase the test timeout to 50mins

Author: shahmishal

test/CMakeLists.txt

@@ -258,7 +258,7 @@ if(PYTHONINTERP_FOUND)
             TIMEOUT 1 # second
             ERROR_QUIET)
         if(NOT python_psutil_status)
-          list(APPEND LIT_ARGS "--timeout=1800") # 30 minutes
+          list(APPEND LIT_ARGS "--timeout=3000") # 50 minutes
         endif()
 
         list(APPEND LIT_ARGS "--xunit-xml-output=${SWIFT_TEST_RESULTS_DIR}/lit-tests.xml")