fixed e81da9de from https://gitee.com/zhangyafei-echo/third_party_zlib/pulls/48

IssueNo:#I68PTQ
Description:libz.so is provided by thirdparty, not provided by bundlemgr
Sig:SIG_ApplicationFramework
Feature or BugFix: Feature
Binary Source: No
Signed-off-by: Nzhangyafei.echo <zhangyafei12@huawei.com>
Change-Id: Ia5ff1598a96ea5c6966dda05565e5578a839cfb9

BUILD.gn

@@ -90,6 +90,13 @@ ohos_shared_library("shared_libz") {
   configs = [ ":zlib_config" ]
   public_configs = [ ":zlib_public_config" ]
 
+  install_images = [
+    "system",
+    "updater",
+  ]
+
+  symlink_target_name = [ "libz.so" ]
+
   part_name = "zlib"
   subsystem_name = "thirdparty"
 }