tests: shorten and simplify global setup section in test-rewind.t

Since ui.interactive was used for just a single hg split call, it's fine to
have a --config override there.

tests/test-rewind.t

-This test file test the rewind command in several situations.
+  $ . $TESTDIR/testlib/common.sh
 
 Global setup
 ============
 
@@ -2,6 +2,5 @@
 
 Global setup
 ============
 
-  $ . $TESTDIR/testlib/common.sh
   $ cat >> $HGRCPATH << EOF
@@ -7,4 +6,2 @@
   $ cat >> $HGRCPATH << EOF
-  > [ui]
-  > interactive = true
   > [phases]
@@ -10,5 +7,5 @@
   > [phases]
-  > publish=False
+  > publish = false
   > [alias]
   > glf = log -GT "{rev}: {desc} ({files})"
   > [extensions]
@@ -18,6 +15,5 @@
   $ hg init rewind-testing-base
   $ cd rewind-testing-base
   $ echo a > root
-  $ hg add root
-  $ hg ci -m 'c_ROOT'
+  $ hg ci -qAm 'c_ROOT'
   $ echo a > A
@@ -23,4 +19,3 @@
   $ echo a > A
-  $ hg add A
-  $ hg ci -m 'c_A0'
+  $ hg ci -qAm 'c_A0'
   $ echo a > B
@@ -26,6 +21,6 @@
   $ echo a > B
-  $ hg add B
-  $ hg ci -m 'c_B0'
+  $ hg ci -qAm 'c_B0'
+
   $ hg log -G
   @  changeset:   2:7e594302a05d
   |  tag:         tip
@@ -493,7 +488,7 @@
   $ echo D > D
   $ hg add C D
   $ hg ci -m 'c_CD0'
-  $ hg split << EOF
+  $ hg split --config ui.interactive=yes << EOF
   > y
   > f
   > d