roles/burp-server: Deploy BURP server

The *burp-server* role installs and configures a BURP server. It is
adapted from a previous iteration, and should support CentOS/RHEL/Fedora
and Gentoo, as well as both BURP 1.x and 2.x (depending on which version
gets installed by the system package manager).

To manage the certificate authority, the *burp-server* role uses the
`burp_ca` command. This has the advantage of not requiring any external
certificate management, but effectively binds the CA to a specific
machine.

roles/burp-server/handlers/main.yml

@@ -0,0 +1,8 @@
+- name: process tmpfiles
+  command: '{{ tmpfiles_cmd }} --create'
+- name: restart burp server
+  service:
+    name=burp
+    state=restarted
+- name: save firewalld configuration
+  command: firewall-cmd --runtime-to-permanent