ipatests: check that pkispawn log is not empty

Since commits:
https://github.com/dogtagpki/pki/commit/0102d836f4eac0fcea0adddb4c98d5ea05e4e8f6
https://github.com/dogtagpki/pki/commit/de217557a642d799b1c4c390efa55493707c738e
pkispawn will not honor the pki_log_level configuration item.
All 10.9 Dogtag versions have these commits.
This affects FreeIPA in that it makes debugging Dogtag installation issues next
to impossible.
Adding --debug to the pkispawn CLI is required to revert to the previous
behavior.
Therefore check that the log is not empty and contains DEBUG+INFO lines.

Fixes: https://pagure.io/freeipa/issue/8503
Signed-off-by: François Cami <fcami@redhat.com>
Reviewed-By: Thomas Woerner <twoerner@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipatests/test_integration/test_commands.py

@@ -1295,3 +1295,26 @@ class TestIPACommand(IntegrationTest):
         )
         assert result.returncode == 1
         assert msg in result.stderr_text
+
+    def test_pkispawn_log_is_present(self):
+        """
+        This testcase checks if pkispawn logged properly.
+        It is a candidate from being moved out of test_commands.
+        """
+        result = self.master.run_command(
+            ["ls", "/var/log/pki/"]
+        )
+        pkispawnlogfile = None
+        for file in result.stdout_text.splitlines():
+            if file.startswith("pki-ca-spawn"):
+                pkispawnlogfile = file
+                break
+        assert pkispawnlogfile is not None
+        pkispawnlogfile = os.path.sep.join(("/var/log/pki", pkispawnlogfile))
+        pkispawnlog = self.master.get_file_contents(
+            pkispawnlogfile, encoding='utf-8'
+        )
+        # Totally arbitrary. pkispawn debug logs tend to be > 10KiB.
+        assert len(pkispawnlog) > 1024
+        assert "DEBUG" in pkispawnlog
+        assert "INFO" in pkispawnlog