mongodb: Include <optional> c++ header

Fixes build with gcc11

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb/0001-include-needed-c-header.patch

@@ -0,0 +1,29 @@
+From 383b1dda4800c2514cb31446cd7478692d7d26cf Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 3 Mar 2021 12:43:16 -0800
+Subject: [PATCH] include needed c++ header
+
+Fixes
+plan_stats.h:214:10: error: 'optional' in namespace 'std' does not name a template type
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/mongo/db/exec/plan_stats.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/mongo/db/exec/plan_stats.h b/src/mongo/db/exec/plan_stats.h
+index ea75f673b8..0cc9b4636d 100644
+--- a/src/mongo/db/exec/plan_stats.h
++++ b/src/mongo/db/exec/plan_stats.h
+@@ -31,6 +31,7 @@
+ 
+ #include <cstdint>
+ #include <cstdlib>
++#include <optional>
+ #include <string>
+ #include <vector>
+ 
+-- 
+2.30.1
+

meta-oe/dynamic-layers/meta-python/recipes-dbs/mongodb/mongodb_git.bb

@@ -27,6 +27,7 @@ SRC_URI = "git://github.com/mongodb/mongo.git;branch=v4.4 \
            file://1296.patch \
            file://0001-Fix-compilation-with-fno-common.patch \
            file://0001-stacktrace-Define-ARCH_BITS-for-x86.patch \
+           file://0001-include-needed-c-header.patch \
            "
 SRC_URI_append_libc-musl ="\
            file://0001-Mark-one-of-strerror_r-implementation-glibc-specific.patch \