ruby-native: add dependency on zlib-native

ruby-native: add dependency on zlib-native

Some packages use the ruby "gem build" command to create gems,
which requires zlib, so add dependency on zlib-native or
it relies the host's zlib and fails on some host like CentOS:

| ERROR:  Loading command: build (LoadError)
|       cannot load such file -- zlib
| ERROR:  While executing gem ... (NoMethodError)

Issue-ID: INF-155
Issue-ID: INF-157
Issue-ID: INF-158
Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Change-Id: Ib680adda00df8bad2191d367d5ff27ff393fbf96