Don't test pw_shell for old vendor images

R GSI on P product tests fail since pw_shell has changed.  This value
has no practical use on Android, so we ignore testing it for older
vendor images.

Bug: 160937247
Test: this test does/doesn't run appropriately
Merged-In: Ie485bd019b3826e71ad19131effcbb002f888d52
Change-Id: Ie485bd019b3826e71ad19131effcbb002f888d52
(cherry picked from commit b9fa04d805912d58d920ccd1a7af77daf81293e7)

tests/grp_pwd_test.cpp

diff --git a/tests/grp_pwd_test.cpp b/tests/grp_pwd_test.cpp
index 9c6b0c5..cab7175 100644
--- a/tests/grp_pwd_test.cpp
+++ b/tests/grp_pwd_test.cpp
@@ -75,7 +75,11 @@
     EXPECT_STREQ("/", pwd->pw_dir);
   }
 
-  EXPECT_STREQ("/bin/sh", pwd->pw_shell);
+  // This has changed over time and that causes new GSI + old vendor images testing to fail.
+  // This parameter doesn't matter on Android, so simply ignore its value for older vendor images.
+  if (android::base::GetIntProperty("ro.product.first_api_level", 0) >= 30) {
+    EXPECT_STREQ("/bin/sh", pwd->pw_shell);
+  }
 }
 
 static void check_getpwuid(const char* username, uid_t uid, uid_type_t uid_type,