Install Go directly from upstream, not through RPM

Signed-off-by: Steve Kuznetsov <skuznets@redhat.com>

contrib/test/integration/golang.yml

@@ -1,22 +1,30 @@
 ---
 
-- name: set up GOPATH if it is not already set
-  lineinfile:
-    dest: /etc/environment
-    line: 'GOPATH={{ ansible_env.HOME }}/go'
-    regexp: 'GOPATH='
-    state: present
-  when: ansible_env.GOPATH is not defined
+- name: fetch Golang
+  unarchive:
+    remote_src: yes
+    src: https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
+    dest: /usr/local
+
+- name: link go toolchain
+  file:
+    src: "/usr/local/go/bin/{{ item }}"
+    dest: "/usr/bin/{{ item }}"
+    state: link
+  with_items:
+    - go
+    - gofmt
+    - godoc
 
 - name: ensure user profile exists
   file:
     path: "{{ ansible_user_dir }}/.profile"
     state: touch
 
-- name: set up PATH for Go binaries
+- name: set up PATH for Go toolchain and built binaries
   lineinfile:
     dest: "{{ ansible_user_dir }}/.profile"
-    line: 'PATH={{ ansible_env.PATH }}:{{ ansible_env.GOPATH }}/bin'
+    line: 'PATH={{ ansible_env.PATH }}:{{ ansible_env.GOPATH }}/bin:/usr/local/go/bin'
     regexp: '^PATH='
     state: present
 
@@ -39,3 +47,5 @@
     - onsi/gomega
     - cloudflare/cfssl/cmd/...
     - jteeuwen/go-bindata/go-bindata
+    - vbatts/git-validation
+    - cpuguy83/go-md2man