testing/bazel2: add expr (from coreutils) to makedepends

With full featured expr from coreutils there is no need in patch

testing/bazel2/APKBUILD

@@ -8,7 +8,7 @@ url="https://bazel.build/"
 arch="x86_64"
 license="Apache-2.0"
 depends="bash libarchive openjdk8 zip unzip"
-makedepends="python3 linux-headers protobuf"
+makedepends="python3 linux-headers protobuf coreutils"
 options="!strip"
 replaces="bazel"
 provides="bazel=$pkgver-r$pkgrel"
@@ -18,8 +18,7 @@ subpackages="
 	$pkgname-zsh-completion
 	$pkgname-examples::noarch
 	"
-source="https://github.com/bazelbuild/bazel/releases/download/$pkgver/bazel-$pkgver-dist.zip
-	bash_completion.patch"
+source="https://github.com/bazelbuild/bazel/releases/download/$pkgver/bazel-$pkgver-dist.zip"
 
 build() {
 	# based on
@@ -89,5 +88,4 @@ unpack() {
 	unzip "$srcdir"/bazel-$pkgver-dist.zip -d "$builddir" > /dev/null
 }
 
-sha512sums="67011c3a045c0fd74cdcb98eef1c3ead6902a3bd65a629fe49911f9dbb4c39508bd91eb63c1fae68284136ad4994afb42a01c7f10983614e432f8be22a1c566e  bazel-2.2.0-dist.zip
-6eb1fcb553518348f5c2dacf239377dbaa2593b751ba98c0c257d0138c55b159891fa3744168a6cff8b305758c64f9153cdc01dd3394b5fff2168319188288df  bash_completion.patch"
+sha512sums="67011c3a045c0fd74cdcb98eef1c3ead6902a3bd65a629fe49911f9dbb4c39508bd91eb63c1fae68284136ad4994afb42a01c7f10983614e432f8be22a1c566e  bazel-2.2.0-dist.zip"

testing/bazel2/bash_completion.patch

-Bash completion patch to fix error in expr
-
---- a/scripts/generate_bash_completion.sh.orig
-+++ a/scripts/generate_bash_completion.sh
-@@ -34,7 +34,7 @@
- }
- 
- get_optarg() {
--  expr -- "${1}" : "[^=]*=\\(.*\\)"
-+  expr "${1}" : "[^=]*=\\(.*\\)"
- }
- 
- append=