Set loglevel for cmds with a lot of output to TRACE

This commit also fixes the recently-added function pkg.owner. It did not
successfully handle file paths containing spaces, and it did not conform
to the way Salt handles other package information queries (i.e.
version(), latest_version(), etc.)

salt/modules/yumpkg.py

@@ -1534,16 +1534,30 @@ def expand_repo_def(repokwargs):
 
 def owner(*paths):
     '''
-    Return the name of the package that owns the specified file. Files may be
-    passed as a string (``path``) or as a list of strings (``paths``). If
-    ``path`` contains a comma, it will be converted to ``paths``. If a file
-    name legitimately contains a comma, pass it in via ``paths``.
+    .. versionadded:: Helium
+
+    Return the name of the package that owns the file. Multiple file paths can
+    be passed. Like :mod:`pkg.version <salt.modules.yumpkg.version`, if a
+    single path is passed, a string will be returned, and if multiple paths are
+    passed, a dictionary of file/package name pairs will be returned.
+
+    If the file is not owned by a package, or is not present on the minion,
+    then an empty string will be returned for that path.
 
     CLI Example:
 
         salt '*' pkg.owner /usr/bin/apachectl
         salt '*' pkg.owner /usr/bin/apachectl /etc/httpd/conf/httpd.conf
     '''
-    cmd = "rpm -qf --queryformat '%{{NAME}}' {0}"
-    return salt.utils.pkg.find_owner(
-        __salt__['cmd.run'], cmd, *paths)
+    if not paths:
+        return ''
+    ret = {}
+    cmd = 'rpm -qf --queryformat "%{NAME}" {0!r}'
+    for path in paths:
+        ret[path] = __salt__['cmd.run_stdout'](cmd.format(path),
+                                               output_loglevel='debug')
+        if 'not owned' in ret[path].lower():
+            ret[path] = ''
+    if len(ret) == 1:
+        return ret.values()[0]
+    return ret