patch 8.2.2872: Python tests fail without the channel feature

Problem:    Python tests fail without the channel feature.
Solution:   Add a feature check. (Dominique Pellé, closes #8226)

Author: dpelle

src/testdir/test_python2.vim

@@ -814,8 +814,12 @@ func Test_python_vim_bindeval()
   call assert_equal(v:none, pyeval("vim.bindeval('v:none')"))
 
   " channel/job
-  call assert_equal(v:none, pyeval("vim.bindeval('test_null_channel()')"))
-  call assert_equal(v:none, pyeval("vim.bindeval('test_null_job()')"))
+  if has('channel')
+    call assert_equal(v:none, pyeval("vim.bindeval('test_null_channel()')"))
+  endif
+  if has('job')
+    call assert_equal(v:none, pyeval("vim.bindeval('test_null_job()')"))
+  endif
 endfunc
 
 " threading

src/testdir/test_python3.vim

@@ -1007,8 +1007,12 @@ func Test_python3_vim_bindeval()
   call assert_equal(v:none, py3eval("vim.bindeval('v:none')"))
 
   " channel/job
-  call assert_equal(v:none, py3eval("vim.bindeval('test_null_channel()')"))
-  call assert_equal(v:none, py3eval("vim.bindeval('test_null_job()')"))
+  if has('channel')
+    call assert_equal(v:none, py3eval("vim.bindeval('test_null_channel()')"))
+  endif
+  if has('job')
+    call assert_equal(v:none, py3eval("vim.bindeval('test_null_job()')"))
+  endif
 endfunc
 
 " threading

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2872,
 /**/
     2871,
 /**/