Strict deps java cmd line flag (#320)

strict_java_deps for java can be configured via command line
removed bazel versions 0.5.3 and 0.5.4 from travis supported versions since above feature mandates 0.6.0 onwards

.travis.yml

@@ -12,8 +12,6 @@ os:
 
 env:
   # we want to test the most recent few releases
-  - V=0.5.3
-  - V=0.5.4
   - V=0.6.0
 
 before_install:

scala/scala.bzl

@@ -314,6 +314,7 @@ def try_to_compile_java_jar(ctx,
                 exports = [],
                 java_toolchain = ctx.attr._java_toolchain,
                 host_javabase = ctx.attr._host_javabase,
+                strict_deps = ctx.fragments.java.strict_java_deps,
     )
     return struct(jar = full_java_jar, ijar = provider.compile_jars.to_list().pop())
 

test_run.sh

@@ -170,6 +170,15 @@ test_scala_library_expect_failure_on_missing_direct_java() {
   test_expect_failure_or_warning_on_missing_direct_deps_with_expected_message "${expected_message}" $test_target "--strict_java_deps=error"
 }
 
+test_scala_library_expect_failure_on_missing_direct_deps_warn_mode_java() {
+  dependency_target='//test_expect_failure/missing_direct_deps/internal_deps:transitive_dependency'
+  test_target='//test_expect_failure/missing_direct_deps/internal_deps:transitive_dependency_java_user'
+
+  local expected_message="buildozer 'add deps $dependency_target ' $test_target"
+
+  test_expect_failure_or_warning_on_missing_direct_deps_with_expected_message "${expected_message}" ${test_target} "--strict_java_deps=warn" "ne"
+}
+
 test_scala_library_expect_failure_on_missing_direct_deps_off_mode() {
   expected_message="test_expect_failure/missing_direct_deps/internal_deps/A.scala:[0-9+]: error: not found: value C"
   test_target='test_expect_failure/missing_direct_deps/internal_deps:transitive_dependency_user'
@@ -583,3 +592,4 @@ $runner test_scala_library_expect_no_recompilation_on_internal_change_of_java_de
 $runner test_scala_library_expect_no_java_recompilation_on_internal_change_of_scala_sibling
 $runner test_scala_library_expect_failure_on_missing_direct_java
 $runner bazel run test:test_scala_proto_server
+$runner test_scala_library_expect_failure_on_missing_direct_deps_warn_mode_java