ipa: truncate logs before each test

So we can collect fresh logs from each test run. We use truncate
insted of rm to avoid additional and time consuming IPA service
restart.

Author: pbrezina

sssd_test_framework/hosts/ipa.py

@@ -99,6 +99,20 @@ def features(self) -> dict[str, bool]:
 
         return self._features
 
+    def setup(self) -> None:
+        """
+        Truncate existing IPA logs before each test to avoid need for restart.
+        """
+        self.conn.run(
+            """
+            set -ex
+            truncate --size 0 /var/log/dirsrv/*/*
+            truncate --size 0 /var/log/httpd/*
+            truncate --size 0 /var/log/ipa/*
+            truncate --size 0 /var/log/krb5kdc.log
+            """
+        )
+
     def kinit(self) -> None:
         """
         Obtain ``admin`` user Kerberos TGT.