pkgclean does not delete subpackages

[bdrewery]

I've added a local test named bulk-build-inc-pkgclean-subpackage.sh that is currently XFAIL due to pkgclean not handling subpackages.

[00:00:46] (00:00:00) stdout: =>> Running: poudriere -e /var/tmp/poudriere/test/etc -d -E -v pkgclean -O _root_git_poudriere6_test-ports_subpkg -j poudriere-test-amd64 -p _root_git_poudriere6_t
est-ports_default -z bulk-build-inc-pkgclean-subpackage -y -C ports-mgmt/subpkgtest
...
[00:00:48] (00:00:00) stdout: [00:00:01] Looking for unneeded packages
[00:00:48] (00:00:00) stdout: [00:00:01] Found specified package (ports-mgmt/subpkgtest): /var/tmp/poudriere/test/data/packages/poudriere-test-amd64-_root_git_poudriere6_test-ports_default-bulk
-build-inc-pkgclean-subpackage/.latest/All/port-test-0.0.2.pkg
[00:00:48] (00:00:00) stdout: [00:00:01] Calculating size for found files... done

[00:00:48] (00:00:00) stderr: =>> 7295> /root/git/poudriere6/test/bulk-build-inc-pkgclean-subpackage.sh:45 OK
[00:00:48] (00:00:00) stderr: =>> 7295> /root/git/poudriere6/test/bulk-build-inc-pkgclean-subpackage.sh:47:_assert_ret_not:12 TEST: $? == 1 cmd: [ -e /var/tmp/poudriere/test/data/packages/poudriere-test-amd64-_root_git_poudriere6_test-ports_default-bulk-build-inc-pkgclean-subpackage/All/port-test-0.0.2.pkg ]
[00:00:48] (00:00:00) stderr: =>> 7295> /root/git/poudriere6/test/bulk-build-inc-pkgclean-subpackage.sh:47:_assert_ret_not:12 TEST: '1' == '1'
[00:00:48] (00:00:00) stderr: =>> 7295> /root/git/poudriere6/test/bulk-build-inc-pkgclean-subpackage.sh:47:_assert_ret_not:12 OK
[00:00:48] (00:00:00) stderr: =>> 7295> /root/git/poudriere6/test/bulk-build-inc-pkgclean-subpackage.sh:47:_assert_ret_not:12 TEST: $? == 1 cmd: [ -e /var/tmp/poudriere/test/data/packages/poudriere-test-amd64-_root_git_poudriere6_test-ports_default-bulk-build-inc-pkgclean-subpackage/All/port-test-cmd2-0.0.2.pkg ]
[00:00:48] (00:00:00) stderr: =>> 7295> /root/git/poudriere6/test/bulk-build-inc-pkgclean-subpackage.sh:47:_assert_ret_not:12 TEST: '1' == '0'
[00:00:48] (00:00:00) stderr: =>> 7295> /root/git/poudriere6/test/bulk-build-inc-pkgclean-subpackage.sh:47:_assert_ret_not:12 FAIL: Bad exit status: 0 cmd: [ -e /var/tmp/poudriere/test/data/packages/poudriere-test-amd64-_root_git_poudriere6_test-ports_default-bulk-build-inc-pkgclean-subpackage/All/port-test-cmd2-0.0.2.pkg ]$
[00:00:48] (00:00:00) stderr: >>   expected '1$'
[00:00:48] (00:00:00) stderr: >>   actual   '0$'

~/git/poudriere6 # ls -al /var/tmp/poudriere/test/data/packages/poudriere-test-amd64-_root_git_poudriere6_test-ports_default-bulk-build-inc-pkgclean-subpackage/All/
total 18289
drwxr-xr-x  2 root   wheel        9 Feb 18 16:04 ./
drwxr-xr-x  4 root   wheel       12 Feb 18 16:04 ../
-rw-r--r--  2 nobody wheel 32015360 Feb 18 16:04 pkg-1.20.9_1.pkg
-rw-r--r--  2 nobody wheel    14848 Feb 18 16:04 port-test-cmd2-0.0.2.pkg
-rw-r--r--  2 nobody wheel    10240 Feb 18 16:04 port-test-data1-0.0.2.pkg
-rw-r--r--  2 nobody wheel    10240 Feb 18 16:04 port-test-data2-0.0.2.pkg
-rw-r--r--  2 nobody wheel     8704 Feb 18 16:04 port-test-docs-0.0.2.pkg
-rw-r--r--  2 nobody wheel     8704 Feb 18 16:04 port-test-examples-0.0.2.pkg
-rw-r--r--  2 nobody wheel    59904 Feb 18 16:04 pstree-2.40_1.pkg