Fix windows Buildkit CI (bazel-contrib#1649)

* make windows CI work again
- windows buildkite needs batch_commands instead of shell_commands

* Fixed tests to pass on windows when autocrlf=false

* Added MSYS2_ARG_CONV_EXCL=* to windows CI
This is needed to handle targets (with //) that are passed as args

* Set PATH when running windows tests

* Explicity add libxml2 to Windows CI environment

Author: crt-31

.bazelci/presubmit.yml

@@ -46,7 +46,11 @@ tasks:
   test_rules_scala_win:
     name: "./test_rules_scala"
     platform: windows
-    shell_commands:
+    environment:      
+      MSYS2_ARG_CONV_EXCL: "*"
+    batch_commands:
+    - "set PATH=/usr/bin;%PATH%" #Make sure bash uses msys commands over windows commands. (i.e. find).
+    - "bash -lc \"pacman --noconfirm --needed -S libxml2\"" #tests require xmllint
     - "bash test_rules_scala.sh"
   test_coverage_linux_6_5_0:
     name: "./test_coverage"

test/src/main/scala/scalarules/test/duplicated_resources/child/ScalaLibResourcesDuplicatedTest.scala

@@ -5,8 +5,8 @@ import org.scalatest.funsuite._
 class ScalaLibResourcesDuplicatedTest extends AnyFunSuite {
 
   test("Scala library depends on resource + deps that contains same name resources, have higher priority on this target's resource.") {
-    //Using platform dependent newline (%n)
-    assert(get("/resource.txt") === String.format("I am a text resource from child!%n"))
+    
+    assert(get("/resource.txt") === String.format("I am a text resource from child!\n"))
   }
 
   private def get(s: String): String =

test/src/main/scala/scalarules/test/resources/ScalaLibResourcesFromExternalDepTest.scala

@@ -7,7 +7,7 @@ class ScalaLibResourcesFromExternalDepTest extends SpecWithJUnit {
   "Scala library depending on resources from external resource-only jar" >> {
     "allow to load resources" >> {
 
-      val expectedString = String.format("A resource%n"); //Using platform dependent newline (%n)
+      val expectedString = String.format("A resource\n");
       get("/resource.txt") must beEqualTo(expectedString)
 
     }

test/src/main/scala/scalarules/test/resources/ScalaLibResourcesFromExternalScalaTest.scala

@@ -5,7 +5,7 @@ import org.scalatest.funsuite._
 class ScalaLibResourcesFromExternalScalaTest extends AnyFunSuite {
 
   test("Scala library depending on resources from external resource-only jar should allow to load resources") {
-    val expectedString = String.format("A resource%n"); //Using platform dependent newline (%n)
+    val expectedString = String.format("A resource\n");
     assert(get("/resource.txt") === expectedString)
   }