patch 8.2.0710: Netbeans test sometimes fails

Problem:    Netbeans test sometimes fails.
Solution:   Mark any test using an external command as flaky.
diff --git a/src/testdir/shared.vim b/src/testdir/shared.vim
index fda4d03..3e0929c 100644
--- a/src/testdir/shared.vim
+++ b/src/testdir/shared.vim
@@ -36,6 +36,9 @@
 
 " Run "cmd".  Returns the job if using a job.
 func RunCommand(cmd)
+  " Running an external command can occasionally be slow or fail.
+  let g:test_is_flaky = 1
+
   let job = 0
   if has('job')
     let job = job_start(a:cmd, {"stoponexit": "hup"})
diff --git a/src/version.c b/src/version.c
index c7fc8ee..2004f56 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    710,
+/**/
     709,
 /**/
     708,