submodules update

Signed-off-by: Stephen Sun <stephens@nvidia.com>

Author: stephenxs

.gitmodules

@@ -6,7 +6,7 @@
 	url = https://github.com/sonic-net/sonic-linux-kernel
 [submodule "sonic-sairedis"]
 	path = src/sonic-sairedis
-	url = https://github.com/sonic-net/sonic-sairedis
+	url = https://github.com/stephenxs/sonic-sairedis
 [submodule "sonic-swss"]
 	path = src/sonic-swss
 	url = https://github.com/sonic-net/sonic-swss
@@ -30,7 +30,7 @@
 	url = https://github.com/p4lang/ptf.git
 [submodule "src/sonic-utilities"]
 	path = src/sonic-utilities
-	url = https://github.com/sonic-net/sonic-utilities
+	url = https://github.com/stephenxs/sonic-utilities
 [submodule "platform/broadcom/sonic-platform-modules-arista"]
 	path = platform/broadcom/sonic-platform-modules-arista
 	url = https://github.com/aristanetworks/sonic
@@ -132,4 +132,4 @@
 	url = https://github.com/Marvell-switching/sonic-platform-marvell.git
 [submodule "platform/vpp"]
 	path = platform/vpp
-	url = https://github.com/sonic-net/sonic-platform-vpp.git
+	url = https://github.com/sonic-net/sonic-platform-vpp.git