update codecov settings

.codecov.yml

@@ -1,16 +1,7 @@
-coverage:
-  status:
-    project:
-      default:
-        # basic
-        target: auto
-        threshold: null
-        base: auto
-        # advanced
-        branches: null
-        if_no_uploads: error
-        if_not_found: success
-        if_ci_failed: error
-        only_pulls: false
-        flags: null
-        paths: null
+ignore:
+  - "spring-cloud-alibaba-dependencies/.*"
+  - "spring-cloud-alibaba-docs/.*"
+  - "spring-cloud-alibaba-examples/.*"
+  - "spring-cloud-alibaba-test/.*"
+  - "spring-cloud-starter-alibaba/.*"
+  - "spring-cloud-starter-alicloud/.*"