Fix ensurepip tests to match new --executable argument behavior

Update test expectations in test_ensurepip.py to account for the new
--executable argument that gets added when using --prefix or --root
options. The implementation now correctly sets the executable path
when installing with a custom prefix, but the tests weren't updated
to expect this additional argument.

- test_bootstrapping_with_root: expect --prefix "/" and --executable
- test_bootstrapping_with_prefix: expect --executable argument

Author: mcepl

Lib/test/test_ensurepip.py

@@ -94,7 +94,8 @@ def test_bootstrapping_with_root(self):
         self.run_pip.assert_called_once_with(
             [
                 "install", "--no-cache-dir", "--no-index", "--find-links",
-                unittest.mock.ANY, "--root", "/foo/bar/", "--prefix", unittest.mock.ANY,
+                unittest.mock.ANY, "--root", "/foo/bar/", "--prefix", "/",
+                "--executable", unittest.mock.ANY,
                 "pip",
             ],
             unittest.mock.ANY,
@@ -105,7 +106,8 @@ def test_bootstrapping_with_prefix(self):
         self.run_pip.assert_called_once_with(
             [
                 "install", "--no-cache-dir", "--no-index", "--find-links",
-                unittest.mock.ANY, "--prefix", "/foo/bar/", "pip",
+                unittest.mock.ANY, "--prefix", "/foo/bar/",
+                "--executable", unittest.mock.ANY, "pip",
             ],
             unittest.mock.ANY,
         )