Routed subinterface enhancements (#1907)

* Add support for long name and short name routed subinterfaces.
* Handling Routed subinterface ADMIN status dependency with parent interface
* Handling Routed subinterface MTU dependency with parent interface

Author: preetham-singh

cfgmgr/Makefile.am

@@ -38,7 +38,7 @@ portmgrd_CFLAGS = $(DBGFLAGS) $(AM_CFLAGS) $(CFLAGS_COMMON) $(CFLAGS_SAI)
 portmgrd_CPPFLAGS = $(DBGFLAGS) $(AM_CFLAGS) $(CFLAGS_COMMON) $(CFLAGS_SAI)
 portmgrd_LDADD = $(COMMON_LIBS) $(SAIMETA_LIBS)
 
-intfmgrd_SOURCES = intfmgrd.cpp intfmgr.cpp $(top_srcdir)/orchagent/orch.cpp $(top_srcdir)/orchagent/request_parser.cpp shellcmd.h
+intfmgrd_SOURCES = intfmgrd.cpp intfmgr.cpp $(top_srcdir)/orchagent/orch.cpp $(top_srcdir)/orchagent/request_parser.cpp $(top_srcdir)/lib/subintf.cpp shellcmd.h
 intfmgrd_CFLAGS = $(DBGFLAGS) $(AM_CFLAGS) $(CFLAGS_COMMON) $(CFLAGS_SAI)
 intfmgrd_CPPFLAGS = $(DBGFLAGS) $(AM_CFLAGS) $(CFLAGS_COMMON) $(CFLAGS_SAI)
 intfmgrd_LDADD = $(COMMON_LIBS) $(SAIMETA_LIBS)