ci: remove host_test runner tag, use more precise build, shiny instead

.gitlab/ci/build.yml

@@ -3,10 +3,7 @@
   extends:
     - .after_script:build:ccache-show-stats:upload-failed-job-logs
   image: $ESP_ENV_IMAGE
-  tags:
-    - build
-    # build only on shiny servers since shiny storage server is at the same location
-    - shiny
+  tags: [build, shiny]
   variables:
     # Enable ccache for all build jobs. See configure_ci_environment.sh for more ccache related settings.
     IDF_CCACHE_ENABLE: "1"

.gitlab/ci/deploy.yml

@@ -58,7 +58,7 @@ deploy_update_SHA_in_esp-dockerfiles:
   dependencies: []
   variables:
     GIT_DEPTH: 2
-  tags: [ shiny, build ]
+  tags: [build, shiny]
   script:
     - 'curl --header "PRIVATE-TOKEN: ${ESPCI_SCRIPTS_TOKEN}" -o create_MR_in_esp_dockerfile.sh $GITLAB_HTTP_SERVER/api/v4/projects/1260/repository/files/create_MR_in_esp_dockerfile%2Fcreate_MR_in_esp_dockerfile.sh/raw\?ref\=master'
     - chmod +x create_MR_in_esp_dockerfile.sh

.gitlab/ci/host-test.yml

@@ -2,8 +2,7 @@
   extends: .rules:test:host_test
   stage: host_test
   image: $ESP_ENV_IMAGE
-  tags:
-    - host_test
+  tags: [build, shiny]
   dependencies: # set dependencies to null to avoid missing artifacts issue
   # run host_test jobs immediately, only after upload cache
   needs:

.gitlab/ci/pre_check.yml

@@ -1,8 +1,7 @@
 .pre_check_template:
   stage: pre_check
   image: $ESP_ENV_IMAGE
-  tags:
-    - host_test
+  tags: [build, shiny]
   dependencies: # set dependencies to null to avoid missing artifacts issue
 
 check_version: