tests: skip CVS tests for root

tests: skip CVS tests for root

It is not uncommon for cvs to check for root and to refuse work
in that case.

Differential Revision: https://phab.mercurial-scm.org/D8395

--- a/tests/test-convert-cvs-branch.t	Wed Apr 15 22:18:05 2020 -0400
+++ b/tests/test-convert-cvs-branch.t	Fri Apr 10 19:52:33 2020 +0200
@@ -1,4 +1,4 @@
-#require cvs
+#require cvs no-root
 
 This is https://bz.mercurial-scm.org/1148
 and https://bz.mercurial-scm.org/1447

--- a/tests/test-convert-cvs-detectmerge.t	Wed Apr 15 22:18:05 2020 -0400
+++ b/tests/test-convert-cvs-detectmerge.t	Fri Apr 10 19:52:33 2020 +0200
@@ -1,4 +1,4 @@
-#require cvs
+#require cvs no-root
 
 Test config convert.cvsps.mergefrom config setting.
 (Should test similar mergeto feature, but I don't understand it yet.)

--- a/tests/test-convert-cvs-synthetic.t	Wed Apr 15 22:18:05 2020 -0400
+++ b/tests/test-convert-cvs-synthetic.t	Fri Apr 10 19:52:33 2020 +0200
@@ -1,4 +1,4 @@
-#require cvs112
+#require cvs112 no-root
 
 This feature requires use of builtin cvsps!
 

--- a/tests/test-convert-cvs.t	Wed Apr 15 22:18:05 2020 -0400
+++ b/tests/test-convert-cvs.t	Fri Apr 10 19:52:33 2020 +0200
@@ -1,4 +1,4 @@
-#require cvs
+#require cvs no-root
 
   $ cvscall()
   > {

--- a/tests/test-convert-cvsnt-mergepoints.t	Wed Apr 15 22:18:05 2020 -0400
+++ b/tests/test-convert-cvsnt-mergepoints.t	Fri Apr 10 19:52:33 2020 +0200
@@ -1,4 +1,4 @@
-#require cvs
+#require cvs no-root
 
   $ filterpath()
   > {