tests: fix glob pattern for dynamic timer alignment
The number of space characters varies depending on the number of digits of the
timer, making some tests fail on slow machines in an unintended way:
```diff
--- /build/mercurial-6.1/tests/test-merge-halt.t
+++ /build/mercurial-6.1/tests/test-merge-halt.t.err
@@ -210,6 +210,6 @@
merge halted after failed merge (see hg resolve)
[240]
$ hg shelve --list
- default (* ago) changes to: foo (glob)
+ default (11s ago) changes to: foo
$ hg unshelve --abort
unshelve of 'default' aborted
ERROR: test-merge-halt.t output changed
```
Differential Revision: https://phab.mercurial-scm.org/D12381
$ hg init a
$ cd a
$ touch a; hg commit -qAm_
$ hg bookmark $(for i in $($TESTDIR/seq.py 0 20); do echo b$i; done)
$ hg clone . ../b -q
$ cd ../b
Checking that when lookup multiple bookmarks in one go, if one of them
fails (thus causing the sshpeer to be stopped), the errors from the
further lookups don't result in tracebacks.
$ hg pull -r b0 -r nosuchbookmark $(for i in $($TESTDIR/seq.py 1 20); do echo -r b$i; done) ssh://user@dummy/$(pwd)/../a
pulling from ssh://user@dummy/$TESTTMP/b/../a
abort: unknown revision 'nosuchbookmark'
[255]