add osbs orchestrator/worker playbooks/roles

Signed-off-by: Adam Miller <maxamillion@fedoraproject.org>
Signed-off-by: Adam Miller <admiller@redhat.com>

roles/openshift-prerequisites/README.md

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+OpenShift prerequisites Role
+============================
+
+An Ansible role to manage prerequisites for OSE installation.
+It performs the following operations:
+
+* Sets necessary sebools for GlusterFS and NFS.
+  https://docs.openshift.com/container-platform/3.3/install_config/install/prerequisites.html#prereq-selinux
+* Installs python-six package
+  https://github.com/openshift/openshift-ansible/issues/3020
+
+
+Role Variables Example
+----------------------
+
+    # Set up sebools
+    openshift_sebools:
+    - name: virt_sandbox_use_fusefs
+      state: yes
+      persistent: yes
+
+
+Example Playbook
+----------------
+
+    - hosts: all
+      roles:
+      - openshift-prerequisites
+
+
+Dependencies
+------------
+
+None.

roles/openshift-prerequisites/defaults/main.yml

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+---
+# SELinux booleans
+openshift_sebools:
+# https://docs.openshift.com/container-platform/3.3/install_config/persistent_storage/persistent_storage_glusterfs.html#selinux
+- name: virt_sandbox_use_fusefs
+  state: yes
+  persistent: yes
+# https://docs.openshift.com/container-platform/3.3/install_config/persistent_storage/persistent_storage_nfs.html#nfs-selinux
+- name: virt_use_nfs
+  state: yes
+  persistent: yes
+- name: virt_sandbox_use_nfs
+  state: yes
+  persistent: yes

roles/openshift-prerequisites/meta/main.yml

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+# Standards: 1.6
+---
+galaxy_info:
+  author: Andrej Golis
+  description: Set up prerequisites for OSE installation
+  company: Red Hat, Inc.
+  license: BSD
+  min_ansible_version: 2.1
+  platforms:
+  - name: EL
+    versions:
+    - 7
+dependencies: []

roles/openshift-prerequisites/tasks/main.yml

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+---
+- name: Install python-six package
+  package:
+    name: python-six
+    state: present
+
+- name: Install libselinux-python package
+  package:
+    name: libselinux-python
+    state: present
+
+- name: Configure SELinux
+  selinux:
+    state: enforcing
+    policy: targeted
+
+- name: enable/disable sebools
+  seboolean:
+    name: "{{ item.name }}"
+    state: "{{ item.state }}"
+    persistent: "{{ item.persistent }}"
+  with_items: "{{ openshift_sebools }}"
+  when: openshift_sebools != ""