samba: set strictDeps

It doesn't fix the cross compilation issues related to the surrounding
commits, but it is a good idea to set it anyway. Also, `libtasn1` needs
to be added nativeBuildInputs for `asn1Parser` to be detected properly
and for `bin/dumpmscat` script to be added.

pkgs/servers/samba/4.x.nix

@@ -122,6 +122,7 @@ stdenv.mkDerivation (finalAttrs: {
     perl.pkgs.ParseYapp
     perl.pkgs.JSON
     libxslt
+    libtasn1 # Needed also natively for `asn1Parser` program
     docbook_xsl
     docbook_xml_dtd_45
     cmocka
@@ -267,6 +268,8 @@ stdenv.mkDerivation (finalAttrs: {
     tdb
   ];
 
+  strictDeps = true;
+
   preBuild = ''
     export MAKEFLAGS="-j $NIX_BUILD_CORES"
   '';