[PATCH 7 of 8] tests: conditionalize test-phases.t output for chg

[Pulkit Goyal]

# HG changeset patch
# User Pulkit Goyal <7895pulkit at gmail.com>
# Date 1585148595 -19800
#      Wed Mar 25 20:33:15 2020 +0530
# Node ID eedfec1725f230d9d074ffca2d543b119bc18954
# Parent  71f078cbf9ea839829229a8935a489200d1f8d36
tests: conditionalize test-phases.t output for chg

IIUC chg loads the ProgrammingError class which leads to it directly referencing
it in error output. This makes the test pass on chg.

diff --git a/tests/test-phases.t b/tests/test-phases.t
--- a/tests/test-phases.t
+++ b/tests/test-phases.t
@@ -896,11 +896,13 @@ Check we deny its usage on older reposit
   $ hg --config "phases.new-commit=internal" commit -m "my test internal commit" 2>&1 | grep ProgrammingError
   ** ProgrammingError: this repository does not support the internal phase
       raise error.ProgrammingError(msg)
-  mercurial.error.ProgrammingError: this repository does not support the internal phase
+  mercurial.error.ProgrammingError: this repository does not support the internal phase (no-chg !)
+  ProgrammingError: this repository does not support the internal phase (chg !)
   $ hg --config "phases.new-commit=archived" commit -m "my test archived commit" 2>&1 | grep ProgrammingError
   ** ProgrammingError: this repository does not support the archived phase
       raise error.ProgrammingError(msg)
-  mercurial.error.ProgrammingError: this repository does not support the archived phase
+  mercurial.error.ProgrammingError: this repository does not support the archived phase (no-chg !)
+  ProgrammingError: this repository does not support the archived phase (chg !)
 
   $ cd ..