Merge pull request #3288 from nitinsoniism/show_intf_brief

zebra: Support "brief" output for "show interface"

diff --cc zebra/interface.c
Simple merge

diff --cc zebra/subdir.am
index 23c3cd4239530b857a0b64404613b83e8f154cf8,054f1770f37eb31b959f9acfc3fbe040226f2928..daa7946bc0923697783ef687c9d893aaa4d19080
--- 1/zebra/subdir.am
--- 2/zebra/subdir.am
+++ b/zebra/subdir.am
@@@ -95,12 -93,12 +95,14 @@@ zebra_zebra_SOURCES = 
        zebra/zebra_errors.c \
        # end
  
 +zebra/zebra_mlag_clippy.c: $(CLIPPY_DEPS)
 +zebra/zebra_mlag.$(OBJEXT): zebra/zebra_mlag_clippy.c
 +
  zebra/zebra_vty_clippy.c: $(CLIPPY_DEPS)
+ zebra/interface_clippy.c: $(CLIPPY_DEPS)
+ zebra/interface.$(OBJEXT): zebra/interface_clippy.c
  zebra/zebra_vty.$(OBJEXT): zebra/zebra_vty_clippy.c
  
 -
  zebra/zebra_routemap_clippy.c: $(CLIPPY_DEPS)
  zebra/zebra_routemap.$(OBJEXT): zebra/zebra_routemap_clippy.c