fix drone meta again

.drone.yml

-pipeline:  
+pipeline:
+  modify_staging:
+    image: debian:stretch
+    commands:
+      - mv content/_meta-staging.mds content/_meta.md
+      - mv config/config-staging.yml config/config.yml
+
   deploy_staging:
     image: appleboy/drone-scp
     host: gitlab.karathan.at
     target: "/var/www/blog-staging"
     source: "*"
     secrets: [ ssh_password, ssh_username ]
-    branches: [ staging ]
-  
-  deploy_staging_config:
-    image: appleboy/drone-scp
-    host: gitlab.karathan.at
-    port: 22
-    target: "/var/www/blog-staging/config/config.yml"
-    source: "config/config-staging.yml"
-    secrets: [ ssh_password, ssh_username ]
-    branches: [ staging ]
-
-  deploy_staging_meta:
-    image: appleboy/drone-scp
-    host: gitlab.karathan.at
-    port: 22
-    target: "/var/www/blog-staging/content/_meta.md"
-    source: "content/_meta-staging.md"
-    secrets: [ ssh_password, ssh_username ]
     branches: [ staging ]