Calico wireguard (#7638)

* Calico: add Wireguard support

* CI: Add Calico Wireguard scenario

roles/bootstrap-os/tasks/bootstrap-amazon.yml

@@ -0,0 +1,13 @@
+---
+- name: Enable EPEL repo for Amazon Linux
+  yum_repository:
+    name: epel
+    file: epel
+    description: Extra Packages for Enterprise Linux 7 - $basearch
+    baseurl: http://download.fedoraproject.org/pub/epel/7/$basearch
+    gpgcheck: yes
+    gpgkey: http://download.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-7
+    skip_if_unavailable: yes
+    enabled: yes
+    repo_gpgcheck: no
+  when: epel_enabled