move install pb to a handler

roles/shell/handlers/main.yml

@@ -0,0 +1,3 @@
+---
+
+- include: pb.yml

roles/shell/handlers/pb.yml

@@ -0,0 +1,7 @@
+# install pb
+---
+- name: install pb
+  make:
+    chdir: /usr/src/pb
+    target: install
+  become: yes