Bazel: update to new "pkg_tar" syntax.

Change-Id: I9e848571734e905eae9e82c6c43383c964154775
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
Reviewed-on: https://nginx-review.googlesource.com/3122
Reviewed-by: Lizan Zhou <zlizan@google.com>
diff --git a/BUILD b/BUILD
index ca96647..0bcf01c 100644
--- a/BUILD
+++ b/BUILD
@@ -1440,7 +1440,7 @@
 
 pkg_tar(
     name = "nginx-google-sbin",
-    files = [
+    srcs = [
         ":nginx",
     ],
     mode = "0755",
@@ -1451,7 +1451,7 @@
 pkg_tar(
     name = "nginx-google-data",
     extension = "tar.gz",
-    files = [
+    srcs = [
         "usr/share/doc/nginx-google/copyright",
     ],
     mode = "0644",
diff --git a/build.bzl b/build.bzl
index c035751..f8221be 100644
--- a/build.bzl
+++ b/build.bzl
@@ -482,7 +482,7 @@
 
 pkg_tar(
     name = "debian_etc_nginx",
-    files = [
+    srcs = [
         "{nginx}:config_includes",
     ],
     mode = "0644",
@@ -491,7 +491,7 @@
 
 pkg_tar(
     name = "debian_usr_share_nginx_html",
-    files = [
+    srcs = [
         "{nginx}:html_files",
     ],
     mode = "0644",
@@ -500,7 +500,7 @@
 
 pkg_tar(
     name = "debian_var",
-    files = [
+    srcs = [
         "var/cache/nginx/.empty",
         "var/log/nginx/.empty",
     ],
@@ -512,7 +512,7 @@
 _PKGOSS_BUILD_FILE_TAIL = """
 pkg_tar(
     name = "debian_overlay",
-    files = [
+    srcs = [
         "etc/default/nginx",
         "etc/init.d/nginx",
         "etc/logrotate.d/nginx",