CI: unify environment creation (#24632)

.travis.yml

@@ -82,15 +82,10 @@ before_install:
 install:
   - echo "install start"
   - ci/prep_cython_cache.sh
-  - ci/install_travis.sh
+  - ci/setup_env.sh
   - ci/submit_cython_cache.sh
   - echo "install done"
 
-before_script:
-  - ci/install_db_travis.sh
-  - export DISPLAY=":99.0"
-  - ci/before_script_travis.sh
-
 script:
   - echo "script start"
   - source activate pandas-dev

azure-pipelines.yml

@@ -39,9 +39,8 @@ jobs:
   - script: |
       export PATH=$HOME/miniconda3/bin:$PATH
       sudo apt-get install -y libc6-dev-i386
-      ci/incremental/install_miniconda.sh
-      ci/incremental/setup_conda_environment.sh
-    displayName: 'Set up environment'
+      ci/setup_env.sh
+    displayName: 'Setup environment and build pandas'
     condition: true
 
   # Do not require pandas
@@ -59,13 +58,6 @@ jobs:
     displayName: 'Dependencies consistency'
     condition: true
 
-  - script: |
-      export PATH=$HOME/miniconda3/bin:$PATH
-      source activate pandas-dev
-      ci/incremental/build.sh
-    displayName: 'Build'
-    condition: true
-
   # Require pandas
   - script: |
       export PATH=$HOME/miniconda3/bin:$PATH

ci/azure/posix.yml

@@ -50,17 +50,9 @@ jobs:
   steps:
     - script: |
         if [ "$(uname)" == "Linux" ]; then sudo apt-get install -y libc6-dev-i386 $EXTRA_APT; fi
-        echo "Installing Miniconda"
-        ci/incremental/install_miniconda.sh
-        export PATH=$HOME/miniconda3/bin:$PATH
-        echo "Setting up Conda environment"
-        ci/incremental/setup_conda_environment.sh
-      displayName: 'Before Install'
-    - script: |
-        export PATH=$HOME/miniconda3/bin:$PATH
-        source activate pandas-dev
-        ci/incremental/build.sh
-      displayName: 'Build'
+        echo "Creating Environment"
+        ci/setup_env.sh
+      displayName: 'Setup environment and build pandas'
     - script: |
         export PATH=$HOME/miniconda3/bin:$PATH
         source activate pandas-dev