fs_mgr: Add support for MS_LAZYTIME.

"lazytime" as a mount option was removed recently in favor of
MS_LAZYTIME.  This is causing mount failures when calling
IVold::commitChanges.

Bug: 329657783
Test: cuttlefish on android-mainline
Change-Id: Id01c1e5bbd0c82e07126be65f638e16600c058e3
diff --git a/fs_mgr/libfstab/fstab.cpp b/fs_mgr/libfstab/fstab.cpp
index 21d2e2e..d344b2d 100644
--- a/fs_mgr/libfstab/fstab.cpp
+++ b/fs_mgr/libfstab/fstab.cpp
@@ -39,6 +39,10 @@
 #include "fstab_priv.h"
 #include "logging_macros.h"
 
+#if !defined(MS_LAZYTIME)
+#define MS_LAZYTIME (1 << 25)
+#endif
+
 using android::base::EndsWith;
 using android::base::ParseByteCount;
 using android::base::ParseInt;
@@ -74,6 +78,7 @@
         {"private", MS_PRIVATE},
         {"slave", MS_SLAVE},
         {"shared", MS_SHARED},
+        {"lazytime", MS_LAZYTIME},
         {"defaults", 0},
 };
 
diff --git a/fs_mgr/tests/fs_mgr_test.cpp b/fs_mgr/tests/fs_mgr_test.cpp
index 322bf1b..0aa3a1a 100644
--- a/fs_mgr/tests/fs_mgr_test.cpp
+++ b/fs_mgr/tests/fs_mgr_test.cpp
@@ -37,6 +37,10 @@
 using namespace android::fs_mgr;
 using namespace testing;
 
+#if !defined(MS_LAZYTIME)
+#define MS_LAZYTIME (1 << 25)
+#endif
+
 namespace {
 
 const std::string cmdline =
@@ -329,6 +333,7 @@
                 {"private", MS_PRIVATE},
                 {"slave", MS_SLAVE},
                 {"shared", MS_SHARED},
+                {"lazytime", MS_LAZYTIME},
                 {"defaults", 0},
                 {0, 0},
         };