CI: move py38 slow to azure #38429 (#38613)

Co-authored-by: VirosaLi <2EkF8qUgpNkj>

Author: fangchenli

.travis.yml

@@ -35,12 +35,6 @@ matrix:
   fast_finish: true
 
   include:
-    - env:
-      - JOB="3.8, slow" ENV_FILE="ci/deps/travis-38-slow.yaml" PATTERN="slow" SQL="1"
-      services:
-        - mysql
-        - postgresql
-
     - env:
         - JOB="3.7, locale" ENV_FILE="ci/deps/travis-37-locale.yaml" PATTERN="((not slow and not network and not clipboard) or (single and db))" LOCALE_OVERRIDE="zh_CN.UTF-8" SQL="1"
       services:

ci/azure/posix.yml

@@ -43,6 +43,11 @@ jobs:
           CONDA_PY: "38"
           PATTERN: "not slow and not network and not clipboard"
 
+        py38_slow:
+          ENV_FILE: ci/deps/azure-38-slow.yaml
+          CONDA_PY: "38"
+          PATTERN: "slow"
+
         py38_locale:
           ENV_FILE: ci/deps/azure-38-locale.yaml
           CONDA_PY: "38"