update sysutils/terraform to 0.10.0

This is a major release. Please read the upgrading guide:
https://www.terraform.io/upgrade-guides/0-10.html

Changes: https://github.com/hashicorp/terraform/blob/v0.10.0/CHANGELOG.md

While here, switch LICENSE to MPL20.

UPDATING

@@ -5,6 +5,16 @@ they are unavoidable.
 You should get into the habit of checking this file for changes each time
 you update your ports collection, before attempting any port upgrades.
 
+20170803:
+  AFFECTS: users of sysutils/terraform
+  AUTHOR: lifanov@FreeBSD.org
+
+  Terraform was updated to version 0.10.0, which split out provider plugins.
+  Provider plugins are now installed in the project directory the next time
+  "terraform init" is run. Please see the complete upgrading guide:
+
+  https://www.terraform.io/upgrade-guides/0-10.html
+
 20170729:
   AFFECTS: users of net-p2p/bitcoin
   AUTHOR: lwhsu@FreeBSD.org

sysutils/terraform/Makefile

@@ -1,14 +1,14 @@
 # $FreeBSD$
 
 PORTNAME=	terraform
-PORTVERSION=	0.9.11
+PORTVERSION=	0.10.0
 DISTVERSIONPREFIX=	v
 CATEGORIES=	sysutils
 
 MAINTAINER=	lifanov@FreeBSD.org
 COMMENT=	Provides a common configuration to launch infrastructure
 
-LICENSE=	MPL
+LICENSE=	MPL20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USE_GITHUB=	yes
@@ -20,4 +20,8 @@ USES=	go
 
 GO_PKGNAME=	github.com/${GH_ACCOUNT}/${PORTNAME}
 
+post-patch:
+	${REINPLACE_CMD} 's|VersionPrerelease = "dev"|VersionPrerelease = ""|' \
+		${WRKSRC}/terraform/version.go
+
 .include <bsd.port.mk>

sysutils/terraform/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1499264652
-SHA256 (hashicorp-terraform-v0.9.11_GH0.tar.gz) = 400fbf7c65a5f4b599d1b3d20db8ad9d45930a80ce3abf14aa7ed56eac22b3fb
-SIZE (hashicorp-terraform-v0.9.11_GH0.tar.gz) = 17785070
+TIMESTAMP = 1501766278
+SHA256 (hashicorp-terraform-v0.10.0_GH0.tar.gz) = 37fad4afde1978d0a4841176b577a2e446144cec836fb14f177704d111c72f0a
+SIZE (hashicorp-terraform-v0.10.0_GH0.tar.gz) = 6962906