* salt/crypt.py: clean up open filehandles
* salt/fileclient.py: clean up open filehandles
* salt/grains/core.py: clean up open filehandles
* salt/modules/cp.py: clean up open filehandles
* salt/modules/data.py: clean up open filehandles
* salt/modules/dnsutil.py: clean up open filehandles
* salt/modules/dockerng.py: clean up open filehandles
* salt/modules/inspectlib/collector.py: clean up open filehandles
* salt/modules/file.py: clean up open filehandles
* salt/modules/hosts.py: clean up open filehandles
* salt/modules/incron.py: clean up open filehandles
* salt/modules/dpkg.py: clean up open filehandles
* salt/modules/linux_sysctl.py: clean up open filehandles
* salt/modules/netbsd_sysctl.py: clean up open filehandles
* salt/modules/network.py: clean up open filehandles
* salt/modules/nftables.py: clean up open filehandles
* salt/modules/openbsd_sysctl.py: clean up open filehandles
* salt/modules/rh_ip.py: clean up open filehandles
* salt/modules/portage_config.py: clean up open filehandles
* salt/modules/status.py: clean up open filehandles
* salt/modules/tls.py: clean up open filehandles
* salt/modules/xapi.py: clean up open filehandles
* salt/modules/x509.py: clean up open filehandles
* salt/modules/virt.py: clean up open filehandles
* salt/modules/zcbuildout.py: clean up open filehandles
* salt/returners/local_cache.py: clean up open filehandles
* salt/utils/cloud.py: clean up open filehandles
* salt/states/pkgrepo.py: clean up open filehandles
* salt/states/x509.py: clean up open filehandles
* salt/transport/mixins/auth.py: clean up open filehandles
* salt/utils/__init__.py: clean up open filehandles
* salt/states/pkg.py: clean up open filehandles
* salt/utils/minion.py: clean up open filehandles
* salt/utils/openstack/nova.py: clean up open filehandles
* salt/utils/openstack/swift.py: clean up open filehandles
* salt/utils/process.py: clean up open filehandles
* salt/utils/templates.py: clean up open filehandles
* salt/utils/virt.py: clean up open filehandles
* tests/integration/__init__.py: clean up open filehandles
* tests/integration/cli/grains.py: clean up open filehandles
* tests/integration/client/standard.py: clean up open filehandles
* tests/integration/modules/hosts.py: clean up open filehandles
* tests/unit/utils/vt_test.py: clean up open filehandles
* tests/integration/shell/enabled.py: clean up open filehandles
* tests/integration/states/cmd.py: clean up open filehandles
* tests/integration/states/file.py: clean up open filehandles
* tests/integration/states/match.py: clean up open filehandles
* tests/unit/config_test.py: clean up open filehandles
* tests/unit/templates/jinja_test.py: clean up open filehandles
* tests/unit/utils/find_test.py: clean up open filehandles
* tests/integration/modules/state.py: clean up open filehandles
* Update dnsutil_test to reflect changes in fopen usage