Replace src/telemetry as submodule to sonic-telemetry

Author: nirenjan

.gitmodules

@@ -69,3 +69,6 @@
 [submodule "src/sonic-mgmt-framework"]
 	path = src/sonic-mgmt-framework
 	url = https://github.com/project-arlo/sonic-mgmt-framework.git
+[submodule "src/telemetry"]
+	path = src/telemetry
+	url = https://github.com/project-arlo/sonic-telemetry.git