Fix compatibility with procps 4.

Negative UIDs are no longer allowed.  Use a very high one instead.

Taken from upstream:

  https://github.com/ganeti/ganeti/commit/9cd67e6a81c66ed326d68ea8c3241d14eea6550b

diff --git a/test/py/ganeti.uidpool_unittest.py b/test/py/ganeti.uidpool_unittest.py
index b2f5bc5cf2..2d9227cbf5 100755
--- a/test/py/ganeti.uidpool_unittest.py
+++ b/test/py/ganeti.uidpool_unittest.py
@@ -106,23 +106,24 @@ def testRequestUnusedUid(self):
 
     # Check with a single, known unused user-id
     #
-    # We use "-1" here, which is not a valid user-id, so it's
-    # guaranteed that it's unused.
-    uid = uidpool.RequestUnusedUid(set([-1]))
-    self.assertEqualValues(uid.GetUid(), -1)
+    # We use 2^30+42 here, which is a valid UID, but unlikely to be used on
+    # most systems (even as a subuid).
+    free_uid = 2**30 + 42
+    uid = uidpool.RequestUnusedUid(set([free_uid]))
+    self.assertEqualValues(uid.GetUid(), free_uid)
 
     # Check uid-pool exhaustion
     #
-    # uid "-1" is locked now, so RequestUnusedUid is expected to fail
+    # free_uid is locked now, so RequestUnusedUid is expected to fail
     self.assertRaises(errors.LockError,
                       uidpool.RequestUnusedUid,
-                      set([-1]))
+                      set([free_uid]))
 
     # Check unlocking
     uid.Unlock()
     # After unlocking, "-1" should be available again
-    uid = uidpool.RequestUnusedUid(set([-1]))
-    self.assertEqualValues(uid.GetUid(), -1)
+    uid = uidpool.RequestUnusedUid(set([free_uid]))
+    self.assertEqualValues(uid.GetUid(), free_uid)
 
 
 if __name__ == "__main__":
='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=5184da4f7f1443e1ed99a1b8eabd47321559b810'>root</a>/<a href='/guix/log/bootstrap?id=5184da4f7f1443e1ed99a1b8eabd47321559b810'>bootstrap</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/bootstrap?id=5184da4f7f1443e1ed99a1b8eabd47321559b810&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-04-19 16:45:41 +0200'>2024-04-19</span></td><td><a href='/guix/commit/bootstrap?id=2b8a2a6e723a0cf987c814865df9368e6348b6f8'>maint: Generate doc/version[-LANG].texi using `mdate-from-git.scm'.</a><span class='msg-avail'>...<span class='msg-tooltip'>This replaces Automake's `build-aux/mdate-sh' with our own
`build-aux/mdate-from-git.scm' to use reproducible timestamps from Git
instead.

* build-aux/mdate-from-git.scm: New script.
* bootstrap: Use it to replace build-aux/mdate-sh.
* Makefile.am (EXTRA_DIST): Add it.

Change-Id: I17d0a7de9ffea397129c0db1728f86e28a4e245f
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2021-06-13 20:46:01 +0200'>2021-06-13</span></td><td><a href='/guix/commit/bootstrap?id=bd02e50a02ceed914135dba1e69e4457e489cf86'>bootstrap: Simplify search for translation languages.</a><span class='msg-avail'>...<span class='msg-tooltip'>Extend the sed script to also behave like "basename",
saving the addtional call of "xargs basename".

* bootstrap (langs): Extend sed scripts, remove running xargs.
</span></span></td><td>Hartmut Goebel</td></tr>