Add link to flake charts in auto-created issues

hack/jenkins/test-flake-chart/compute_flake_rate.sh

@@ -161,6 +161,7 @@ for ROW in $(cat ${MID_FLAKES_ISSUES}); do
   # Clear $ISSUE_BODY_TMP and fill with the standard header.
   printf "This test has high flake rates for the following environments:\n\n|Environment|Flake Rate (%%)|\n|---|---|\n" > "${ISSUE_BODY_TMP}"
 
+  TEST_CHART_LINK_FORMAT='https://storage.googleapis.com/minikube-flake-rate/flake_chart.html?env=%1$s&test='${TEST_NAME}
   # 1) Filter $MID_FLAKES_DATA to only include entries with the given test name
   # 2) Sort by flake rates in descending order
   # 3) Format the entry into a row in the table
@@ -168,7 +169,7 @@ for ROW in $(cat ${MID_FLAKES_ISSUES}); do
   echo "${TEST_NAME}" \
     | join -t , -1 1 -2 2 - "${MID_FLAKES_DATA}" \
     | sort -t , -g -r -k 3,3 \
-    | awk -F, '{ printf "|%s|%s|\n", $2, $3 }' \
+    | awk -F, '{ printf "|[%1$s]('$TEST_CHART_LINK_FORMAT')|%2$s|\n", $2, $3 }' \
     >> "${ISSUE_BODY_TMP}"
   
   # Edit the issue body to use $ISSUE_BODY_TMP