Allow using Pungi Koji plugin for ostree phases.

This commits changes `ostree` and `ostree_installer` phases
so they can run with Koji Pungi plugin instead of the plain runroot.

It is similar to `buildinstall` phase running with Koji plugin.

Signed-off-by: Jan Kaluza <jkaluza@redhat.com>

pungi/runroot.py

@@ -283,6 +283,35 @@ class Runroot(kobo.log.LoggingBase):
             )
         self._result = output
 
+    def run_pungi_ostree(self, args, log_file=None, arch=None, **kwargs):
+        """
+        Runs the OStree runroot command using the Pungi OSTree
+        Koji plugin as pungi_ostree task.
+
+        The **kwargs are optional and matches the
+        `KojiWrapper.get_pungi_buildinstall_cmd()` kwargs.
+
+        :param dict args: Arguments for the pungi_ostree Koji task.
+        :param str log_file: Log file into which the output of the task will
+            be logged.
+        :param str arch: Architecture on which the task should be executed.
+        """
+        runroot_channel = self.compose.conf.get("runroot_channel")
+        runroot_tag = self.compose.conf["runroot_tag"]
+
+        koji_wrapper = kojiwrapper.KojiWrapper(self.compose.conf["koji_profile"])
+        koji_cmd = koji_wrapper.get_pungi_ostree_cmd(
+            runroot_tag, arch, args, channel=runroot_channel, **kwargs
+        )
+
+        output = koji_wrapper.run_runroot_cmd(koji_cmd, log_file=log_file)
+        if output["retcode"] != 0:
+            raise RuntimeError(
+                "Pungi-buildinstall task failed: %s. See %s for more details."
+                % (output["task_id"], log_file)
+            )
+        self._result = output
+
     def get_buildroot_rpms(self):
         """
         Returns the list of RPMs installed in a buildroot in which the runroot