Factored common functionality out of the Courgette stress test scripts

courgette/analyze_stress_test

Index: courgette/analyze_stress_test
diff --git a/courgette/analyze_stress_test b/courgette/analyze_stress_test
index 338eb6e5f9c38a00674455b861f1d2705193a016..0c700eba59a638b6556a30fab79fbd5d2d2430a6 100755
--- a/courgette/analyze_stress_test
+++ b/courgette/analyze_stress_test
@@ -6,21 +6,9 @@
 
 # Produce metrics analyzing the output of a stress test
 
-set -e
-
-error() {
-  echo "error: ${@}" >&2
-}
+source "$(dirname ${0})/stress_test_common"
 
-# Given a token, search for and count the instances of lines from the
-# logfile that start with the token.
-count_result() {
-  if [ ! -z "${1}" ]; then
-    echo $(cat "${log}" | grep "^${1} " | wc -l)    
-  else
-    echo 0
-  fi
-}
+set -e
 
 # Given a token, search for and compute the percentiles from logfile.
 compute_percentiles() {