Updates to docs and sequence of role invocations.

diff --git a/defaults/main.yml b/defaults/main.yml
index 6d41e49..44162d7 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml

@@ -1,10 +1,10 @@
 ---
 # defaults file for apigee-opdk-setup-os-common-extra
-#os_packages:
-#- lsof
-#- nc
-#- dos2unix
-#- tcpdump
-#- telnet
-#- vim
-#- tree
+os_packages:
+- lsof
+- nc
+- dos2unix
+- tcpdump
+- telnet
+- vim
+- tree

diff --git a/tasks/main.yml b/tasks/main.yml
index 44114ed..c1cb156 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml

@@ -1,50 +1,12 @@
 ---
-# tasks file for apigee-opdk-setup-os-common-extra
-- block:
-
-  - name: Update troubleshooting OS packages
-    become: yes
-    yum:
-      name: "{{ item }}"
-      state: present
-    with_items: "{{ os_packages }}"
-    environment:
-      http_proxy: "{{ http_proxy }}"
-      https_proxy: "{{ https_proxy }}"
-      no_proxy: "{{ no_proxy }}"
-
-  rescue:
-
-    - name: Check for existence of epel.repo
-      stat:
-        path: /etc/yum.repos.d/epel.repo
-      register: epel
-
-    - block:
-
-      - name: expose baseurl in epel.repo definition
-        replace:
-           backup: yes
-           regexp: '^(#baseurl=)(.*)'
-           replace: 'baseurl=\2'
-           dest: '/etc/yum.repos.d/epel.repo'
-
-      - name: remove mirrorlist in epel.repo definition
-        replace:
-           backup: yes
-           regexp: '^(mirrorlist=)(.*)'
-           replace: '#mirrorlist=\2'
-           dest: /etc/yum.repos.d/epel.repo"
-
-      when: epel.stat.exists
-
-    - name: Update troubleshooting OS packages
-      become: yes
-      yum:
-        name: "{{ item }}"
-        state: present
-      with_items: "{{ os_packages }}"
-      environment:
-        http_proxy: "{{ http_proxy }}"
-        https_proxy: "{{ https_proxy }}"
-        no_proxy: "{{ no_proxy }}"
+# tasks file for apigee-opdk-setup-os-common
+- name: Update troubleshooting OS packages
+  become: yes
+  yum:
+    name: "{{ item }}"
+    state: present
+  with_items: "{{ os_packages }}"
+  environment:
+    http_proxy: "{{ http_proxy }}"
+    https_proxy: "{{ https_proxy }}"
+    no_proxy: "{{ no_proxy }}"