Allow users to turn off investigation runs

Users might need to turn off auto investigation runs for various of
reasons. As of now it was not easy to turn off the investigations runs
quickly or the current solution lacks the granularity.
In this case we need to turn off the runs for a specific flavor and in a
specific job group only. This parameter can be placed in an openQA
medium definition.

Author: mloviska

openqa-investigate

@@ -379,6 +379,7 @@ investigate() {
     group="$(echo "$job_data" | runjq -r '.job.parent_group + " / " + .job.group')" || return $?
     [[ "$group" = " / " ]] && [[ "$exclude_no_group" = "true" ]] && echo "Job w/o job group, \$exclude_no_group is set, skipping investigation" && return 0
     [[ "$group" =~ $exclude_group_regex ]] && echo "Job group '$group' matches \$exclude_group_regex '$exclude_group_regex', skipping investigation" && return 0
+    user_unset="$(echo "$job_data" | runjq -r '.job.settings.NO_INVESTIGATION')" && [[ ! "$user_unset" =~ "null" ]] && echo "NO_INVESTIGATION=1 detected, skipping" && return 0
 
     # Optionally we can find "first failed", could extend openQA investigation
     # method instead for we are just working based on supplied job which can

test/02-investigate.t

@@ -3,7 +3,7 @@
 source test/init
 bpan:source bashplus +err +fs +sym
 
-plan tests 98
+plan tests 100
 
 host=localhost
 url=https://localhost
@@ -90,6 +90,9 @@ client-get-job() {
         10035)
             echo '{"job": { "test": "vim", "result": "failed", "parent_group": "foo", "group": "bar", "settings": {"OPENQA_INVESTIGATE_ORIGIN": "10035"} } }'
             ;;
+        10042)
+            echo '{"job": { "test": "vim", "result": "failed", "group": "42", "settings": {"NO_INVESTIGATION": "1"} } }'
+            ;;
         404)
             echo '404 Not Found'
             ;;
@@ -225,6 +228,9 @@ get-dependencies-ajax() {
         10035)
             echo '{"cluster":{},"edges":[], "nodes":[{"id":10035,"state":"cancelled","result":"none"}]}'
             ;;
+        10042)
+            echo '{"cluster":{}, "edges":[], "nodes":[{"id":10042,"state":"done","result":"failed"}]}'
+            ;;
         *)
             echo '{"debug": "get-dependencies-ajax '"$tid"'"}'
             ;;
@@ -306,6 +312,10 @@ try force=true investigate 10031
 is "$rc" 0 'success when job is skipped (because of exclude_no_group and job w/o group)'
 has "$got" 'Job w/o job group, $exclude_no_group is set, skipping investigation'
 
+try investigate 10042
+is "$rc" 0 'NO_INVESTIGATION=1, a failed job with this variable should be skipped'
+has "$got" 'NO_INVESTIGATION=1 detected, skipping'
+
 test-post-investigate() {
     # job is one of the other investigation types, e.g. :investigate:last_good_tests
     try investigate 3001