Fix manual-integration-test

Force a rebuild of PMD for every test case.

Author: adangel

test/manual_integration_tests.rb

@@ -212,6 +212,8 @@ def checkout_pmd_branch(branch = 'master')
       system("git reset --hard origin/#{branch}")
       system('git config user.email "andreas.dangel+pmd-bot@adangel.org"')
       system('git config user.name "PMD CI (pmd-bot)"')
+      # remove any already existing binary to force a rebuild
+      FileUtils.rm Dir.glob('pmd-dist/target/pmd-bin-*.zip')
     end
   end