Update travis

.travis.yml

@@ -1,16 +1,8 @@
-sudo: required
-dist: bionic
+import:
+  - source: QubesOS/qubes-continuous-integration:R4.1/travis-base-r4.1.yml
+  - source: QubesOS/qubes-continuous-integration:R4.1/travis-vms-r4.1.yml
 language: python
 python: '3.5'
-install: git clone https://github.com/QubesOS/qubes-builder ~/qubes-builder
-script: ~/qubes-builder/scripts/travis-build
-env:
- - DISTS_VM=fc29 USE_QUBES_REPO_VERSION=4.1 USE_QUBES_REPO_TESTING=1
- - DISTS_VM=fc30 USE_QUBES_REPO_VERSION=4.1 USE_QUBES_REPO_TESTING=1
- - DISTS_VM=stretch USE_QUBES_REPO_VERSION=4.1 USE_QUBES_REPO_TESTING=1
- - DISTS_VM=buster USE_QUBES_REPO_VERSION=4.1 USE_QUBES_REPO_TESTING=1
- - DISTS_VM=centos7 USE_QUBES_REPO_VERSION=4.1 USE_QUBES_REPO_TESTING=1
-
 jobs:
   include:
     - python: '3.6'  # needs to match bionic
@@ -29,9 +21,3 @@ jobs:
       python: '3.5'
       env: DIST_DOM0=fc31 TESTS_ONLY=
       script: ~/qubes-builder/scripts/travis-deploy
-
-
-branches:
-  except:
-    - /.*_.*/
-    - build