[tests/selinux] pr775-checkpolicy-revdeps: test-pr: Improve test detection

[Petr Lautrbach <plautrba@redhat.com>]

            A new commit has been pushed.

            Repo   : tests/selinux
            Branch : pr775-checkpolicy-revdeps
            Commit : f9d793d5829ff41c00247e05a397bf3f99ab08a1
            Author : Petr Lautrbach <plautrba@redhat.com>
            Date   : 2020-07-22T16:59:10+02:00
            Stats  : +1/-1 in 1 file(s)
            URL    : https://src.fedoraproject.org/tests/selinux/c/f9d793d5829ff41c00247e05a397bf3f99ab08a1?branch=pr775-checkpolicy-revdeps

            Log:
            test-pr: Improve test detection

`git log` tends to short cut filename if the output is not a terminal.

Fixes:

    git log --format= --stat HEAD -1 | grep '/' | sed 's#^ \(.*\)/.*#\1#' | sort -u | tr '\n' ' ' | xargs
    .../bz481628-send-msg-to-dbus selinux-policy/bz481628-send-msg-to-dbus

---
diff --git a/tests-pr.yml b/tests-pr.yml
index b46e197..2a4c2a2 100644
--- a/tests-pr.yml
+++ b/tests-pr.yml
@@ -6,7 +6,7 @@
     - name: Generate list of tests in this PR
       shell: |
           COMMIT_NUM=$(git cherry origin/master | wc -l)
-          git log --format= --stat HEAD -$COMMIT_NUM | grep '/' | sed 's#^ \(.*\)/.*#\1#' | sort -u | tr '\n' ' ' | xargs
+          git log --format= --stat --name-only HEAD -$COMMIT_NUM | grep '/' | sed '/\//!d;s#\(.*\)/.*#\1#' | sort -u | tr '\n' ' ' | xargs
       delegate_to: localhost
       register: tests_list