libyang 1.0.73 (sonic-net#3710)

- build libyang1.0.73 debian pacakge from libyang github source
    - build libyang python2 and python3 debian packages

Author: li-pingmao

rules/libyang.mk

@@ -23,10 +23,10 @@ $(eval $(call add_derived_package,$(LIBYANG),$(LIBYANG_DBG)))
 LIBYANG_CPP = libyang-cpp_$(LIBYANG_VERSION)_$(CONFIGURED_ARCH).deb
 $(eval $(call add_derived_package,$(LIBYANG),$(LIBYANG_CPP)))
 
-LIBYANG_PY3 = python3-yang_$(LIBYANG_VERSION)_amd64.deb
+LIBYANG_PY3 = python3-yang_$(LIBYANG_VERSION)_$(CONFIGURED_ARCH).deb
 $(eval $(call add_derived_package,$(LIBYANG),$(LIBYANG_PY3)))
 
-LIBYANG_PY2 = python2-yang_$(LIBYANG_VERSION)_amd64.deb
+LIBYANG_PY2 = python2-yang_$(LIBYANG_VERSION)_$(CONFIGURED_ARCH).deb
 $(eval $(call add_derived_package,$(LIBYANG),$(LIBYANG_PY2)))
 
 export LIBYANG LIBYANG_DBG LIBYANG_DEV LIBYANG_CPP LIBYANG_PY3 LIBYANG_PY2