Travis: Use coverage only for PHP 5.6

.travis.yml

@@ -31,20 +31,20 @@ install:
   - docker exec -it rock_cache bash -c 'composer --version && exit $?'
   - travis_retry docker exec -it rock_cache bash -c 'composer install --prefer-dist && exit $?'
   - |
-    if [[ $TAG = '5.5-full' ]]; then
+    if [[ $TAG = '5.6-full' ]]; then
         travis_retry docker exec -it rock_cache bash -c 'apt-get update && apt-get install -y git'
         travis_retry docker exec -it rock_cache bash -c 'composer require satooshi/php-coveralls:^1.0 && mkdir -p build/logs'
     fi
 
 script:
   - |
-    if [[ $TAG = '5.5-full' ]]; then
+    if [[ $TAG = '5.6-full' ]]; then
         PHPUNIT_FLAGS="--coverage-clover=build/logs/clover.xml"
     fi
   - travis_retry docker exec -it rock_cache bash -c 'vendor/bin/phpunit --verbose $PHPUNIT_FLAGS --exclude-group hhvm || exit 0'
 
 after_script:
   - |
-    if [[ $TAG = '5.5-full' ]]; then
+    if [[ $TAG = '5.6-full' ]]; then
       travis_retry docker exec -it rock_cache bash -c 'vendor/bin/coveralls -v && exit $?'
     fi