Add bash-completion to pre-commit bash checks

hooks/pre-commit

@@ -8,7 +8,7 @@ exec 1>&2
 
 PY_FILES="fdroid makebuildserver setup.py examples/*.py buildserver/*.py fdroidserver/*.py"
 SH_FILES="hooks/pre-commit"
-BASH_FILES="fd-commit jenkins-build docs/update.sh"
+BASH_FILES="fd-commit jenkins-build docs/update.sh completion/bash-completion"
 RB_FILES="buildserver/cookbooks/*/recipes/*.rb"
 
 err() {