test-convert-cvs: filter unstable cvs output.

The order choosen by cvs to display commit is not stable when the tests are run
under heavy CPU/IO load. This leads to irrelevant failures of the test suite.
This changeset filters four lines impacted by this instability. The result of
the conversion is still verified.

tests/test-convert-cvs

@@ -80,7 +80,8 b' cvscall -q -d "$CVSROOT" checkout -d src'
 ls srcfull
 hg convert srcfull srcfull-hg \
     | sed -e 's/connecting to.*cvsrepo/connecting to cvsrepo/g' \
-    | grep -v 'log entries' | grep -v 'hook:'
+    | grep -v 'log entries' | grep -v 'hook:' \
+    | grep -v '^[0-3] .*' # filter instable changeset order
 hg cat -r tip srcfull-hg/src/a
 hg cat -r tip srcfull-hg/src/b/c
 

tests/test-convert-cvs.out

@@ -67,10 +67,6 b' creating changesets'
 4 changeset entries
 sorting...
 converting...
-3 Initial revision
-2 import
-1 initial checkin
-0 ci0
 updating tags
 a
 c