Unsure why travis build won't work, so going with a config that shoul…

…d do a decent job of testing

.travis.yml

@@ -11,31 +11,26 @@ branches:
 # by .swift-version, unless SWIFT_SNAPSHOT is specified.
 matrix:
   include:
-    - os: linux
-      dist: xenial
-      sudo: required
-      services: docker
-      env: DOCKER_IMAGE=docker.kitura.net/kitura/swift-ci-ubuntu16.04:5.1.5 SWIFT_SNAPSHOT=5.1.5
     - os: linux
       dist: bionic
       sudo: required
       services: docker
-      env: DOCKER_IMAGE=docker.kitura.net/kitura/swift-ci-ubuntu18.04:5.4 SWIFT_SNAPSHOT=5.4
+      env: DOCKER_IMAGE=docker.kitura.net/kitura/swift-ci-ubuntu18.04:5.4 SWIFT_TEST_ARGS=""
     - os: linux
       dist: xenial
       sudo: required
       services: docker
-      env: DOCKER_IMAGE=docker.kitura.net/kitura/swift-ci-ubuntu18.04:latest SWIFT_SNAPSHOT=$SWIFT_DEVELOPMENT_SNAPSHOT
+      env: DOCKER_IMAGE=docker.kitura.net/kitura/swift-ci-ubuntu18.04:latest USE_SWIFT_DEVELOPMENT_SNAPSHOT=1 SWIFT_TEST_ARGS=""
     - os: osx
-      osx_image: xcode11
+      osx_image: xcode12.2
       sudo: required
-      env: SWIFT_SNAPSHOT=5.1.5 JAZZY_ELIGIBLE=true
+      env: JAZZY_ELIGIBLE=true SWIFT_TEST_ARGS=""
     - os: osx
-      osx_image: xcode12.2
+      osx_image: xcode13.4
       sudo: required
-      #env: SWIFT_SNAPSHOT=5.1.5
+      env: USE_SWIFT_DEVELOPMENT_SNAPSHOT=1 SWIFT_TEST_ARGS=""
     - os: osx
-      osx_image: xcode12.5
+      osx_image: xcode14.2
       sudo: required
       env: SWIFT_SNAPSHOT=$SWIFT_DEVELOPMENT_SNAPSHOT
     - os: osx
@@ -48,4 +43,3 @@ before_install:
 
 script:
   - ./Package-Builder/build-package.sh -projectDir $TRAVIS_BUILD_DIR
-