CI: Move updating of China mirror to Eclipse GitLab server

There is no special reason for using the old OSTC GitLab server for this, so
we can just as well do it from Eclipse GitLab, so it is updated automatically on
each merge.

Signed-off-by: Esben Haabendal <esben.haabendal@huawei.com>

.gitlab-ci.yml

@@ -252,11 +252,12 @@ mirror_ch:
     - job: fetch
       artifacts: true
   rules:
-    - if: $CI_SERVER_HOST == "git.ostc-eu.org"
-  # We don't want to block MRs due to issues with mirror server
+    - if: $CI_SERVER_HOST == "gitlab.eclipse.org" && $CI_PROJECT_PATH == "eclipse/oniro-core/meta-openharmony" && $CI_COMMIT_BRANCH == "kirkstone"
+  # No need to mark builds broken due to infrastructure problems
   allow_failure: true
   tags:
-    - huawei-cloud-ch
+    - region.china
+    - mirror
   image:
     name: ubuntu:20.04
   script:
@@ -273,7 +274,7 @@ build:
     - job: fetch
       artifacts: false
   rules:
-    - if: $CI_SERVER_HOST == "git.ostc-eu.org" && $CHINA_CI != null
+    - if: $CHINA_CI != null
       # Don't use CI resources on normal builds when doing China builds
       when: never
     - when: on_success
@@ -299,7 +300,7 @@ ptest:
     - job: build
       artifacts: false
   rules:
-    - if: $CI_SERVER_HOST == "git.ostc-eu.org" && $CHINA_CI != null
+    - if: $CHINA_CI != null
       # Don't use CI resources on normal tests when doing China builds
       when: never
     - when: on_success
@@ -327,12 +328,9 @@ build_ch:
     - job: mirror_ch
       artifacts: false
   rules:
-    - if: $CI_SERVER_HOST == "git.ostc-eu.org" && $CHINA_CI != null
+    - if: $CHINA_CI != null
   tags:
     - region.china
-    - cpu.4
-    - mem.16
-    - large-disk
   variables:
     MANIFEST_FILE: manifests/gitee/ci.xml
     SOURCE_MIRROR_URL: $SOURCE_MIRROR_URL_CH