ci: rename ci-tron priority tag to avoid conflict with the generic fdo runners

Otherwise, ci-tron runners with that tag could pick up jobs meant for the fdo
runners, as happened here:
https://gitlab.freedesktop.org/mesa/mesa/-/jobs/73883719

The inverse (fdo runners picking up a job meant for a ci-tron runner) is not
possible though, as ci-tron jobs always include a `farm:$RUNNER_FARM_LOCATION`
tag, so the problem only exists in the other direction.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34358>
(cherry picked from commit 6331441e24)

.gitlab-ci.yml

@@ -38,7 +38,7 @@ workflow:
     - if: &is-merge-attempt $GITLAB_USER_LOGIN == "marge-bot" && $CI_PIPELINE_SOURCE == "merge_request_event"
       variables:
         MESA_CI_PERFORMANCE_ENABLED: 1
-        VALVE_INFRA_VANGOGH_JOB_PRIORITY: ""  # Empty tags are ignored by gitlab
+        CI_TRON_JOB_PRIORITY_TAG: ""  # Empty tags are ignored by gitlab
         JOB_PRIORITY: 75
         # fast-fail in merge pipelines: stop early if we get this many unexpected fails/crashes
         DEQP_RUNNER_MAX_FAILS: 40
@@ -110,7 +110,7 @@ variables:
   # Avoid the wall of "Unsupported SPIR-V capability" warnings in CI job log, hiding away useful output
   MESA_SPIRV_LOG_LEVEL: error
   # Default priority for non-merge pipelines
-  VALVE_INFRA_VANGOGH_JOB_PRIORITY: priority:low
+  CI_TRON_JOB_PRIORITY_TAG: ci-tron:priority:low
   JOB_PRIORITY: 50
   DATA_STORAGE_PATH: data_storage
 

.pick_status.json

@@ -694,7 +694,7 @@
         "description": "ci: rename ci-tron priority tag to avoid conflict with the generic fdo runners",
         "nominated": false,
         "nomination_type": 0,
-        "resolution": 4,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": null,
         "notes": null

src/amd/ci/gitlab-ci-inc.yml

@@ -406,7 +406,7 @@
   tags:
     - farm:$RUNNER_FARM_LOCATION
     - amdgpu:codename:VANGOGH
-    - $VALVE_INFRA_VANGOGH_JOB_PRIORITY
+    - $CI_TRON_JOB_PRIORITY_TAG
 
 .navi31-test-valve:
   variables:

src/gallium/drivers/zink/ci/gitlab-ci.yml

@@ -212,7 +212,7 @@ zink-radv-vangogh-valve:
     B2C_TIMEOUT_OVERALL_MINUTES: 30
     FDO_CI_CONCURRENT: 6
     ZINK_DEBUG: vvl
-  # Override the list of tags to drop `priority:low`
+  # Override the list of tags to drop `ci-tron:priority:low`
   tags:
     - farm:$RUNNER_FARM_LOCATION
     - amdgpu:codename:VANGOGH