ci: Move db820c and db410c's gles3 tests to manual, like radv did.

This should make these tests available for clicking on the web ui in
personal branches, while hiding them from marge and the post-merge CI
pipelines.  We had already disabled db410c's gles3, but it wasn't
available in the ui and you had to hack .gitalb-ci.yml.  db820c is now
being disabled by default, due to instaboots mentioned in
https://gitlab.freedesktop.org/mesa/mesa/issues/2649

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4247>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4247>

.gitlab-ci.yml

@@ -677,6 +677,22 @@ softpipe-gles31:
     DEQP_VER: gles31
   extends: softpipe-gles2
 
+# Rules for tests that should not be present in MRs or the main
+# project's pipeline (don't block marge or report red on
+# mesa/mesamaster) but should be present on pipelines in personal
+# branches (so you can opt in to running the flaky test when you want
+# to).
+.test-manual:
+  rules:
+    # Never test in the main project.
+    - if: '$CI_PROJECT_PATH == "mesa/mesa"'
+      when: never
+    # Never test in merge requests.
+    - if: '$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME == $CI_COMMIT_REF_NAME'
+      when: never
+    # Otherwise, allow testing manually for personal branches.
+    - when: manual
+
 arm64_a630_gles2:
   extends:
     - .deqp-test-gl
@@ -731,9 +747,10 @@ arm64_a306_gles2:
     - google-freedreno-db410c
 
 # Disabled due to flaky results
-.arm64_a306_gles3:
+arm64_a306_gles3:
   extends:
     - arm64_a306_gles2
+    - .test-manual
   parallel: 8
   variables:
     DEQP_VER: gles3
@@ -754,6 +771,7 @@ arm64_a530_gles2:
 arm64_a530_gles3:
   extends:
     - arm64_a530_gles2
+    - .test-manual
   parallel: 6
   variables:
     DEQP_VER: gles3
@@ -766,29 +784,18 @@ arm64_a530_gles3:
     VK_DRIVER: radeon
     RADV_DEBUG: checkir
 
-.test-radv-unsafe:
-  extends: .test-radv
-  # Can only be triggered manually on personal branches because RADV is the only
-  # driver that does Vulkan testing at the moment.
-  rules:
-    # Never test RADV by default in the main project.
-    - if: '$CI_PROJECT_PATH == "mesa/mesa"'
-      when: never
-    # Never test RADV by default for merge requests.
-    - if: '$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME == $CI_COMMIT_REF_NAME'
-      when: never
-    # Otherwise, allow testing RADV manually for personal branches.
-    - when: manual
-
 .test-radv-fossilize:
   extends:
     - .fossilize-test
     - .test-radv
 
+# Can only be triggered manually on personal branches because RADV is the only
+# driver that does Vulkan testing at the moment.
 radv_polaris10_vkcts:
   extends:
     - .deqp-test-vk
-    - .test-radv-unsafe
+    - .test-radv
+    - .test-manual
   variables:
     DEQP_SKIPS: deqp-radv-polaris10-skips.txt
   tags:
@@ -833,7 +840,8 @@ llvmpipe-traces:
 radv-polaris10-traces:
   extends:
     - .traces-test-vk
-    - .test-radv-unsafe
+    - .test-radv
+    - .test-manual
   variables:
     DEVICE_NAME: "vk-amd-polaris10"
   tags: