prevent non-existent file from breaking play

fixes:
failed: [127.0.0.1] => {"failed": true, "item": "", "rc": 257}
msg: Destination /etc/sysconfig/iptables does not exist !

create=yes allows it to not fail on non-existent file, but because regex={{ httpd_port }} doesn't match anything, nothing is done (no file is created)
Merge pull request #33 from truedays/patch-1

prevent non-existent file from breaking play
Changed modules from 'action' to 'postgresql_db' and 'postgresql_user', introduced into Ansible as of version 0.6. Also changed parameter 'user' to 'name' as specified in the current documentation.
Merge pull request #34 from stevetjoa/master

Changed modules from 'action' to 'postgresql_db' and 'postgresql_user', ...
http in git is depricated.
fix #36 and force the installation of libselinux-python
Fix #40 -- test to see if selinux is enabled before running seboolean.
detect selinux and act accordingly
Merge pull request #41 from tgerla/fixselinux

detect selinux and act accordingly
Update README.md
Fix with_items variable syntax in ec2 example
Merge pull request #43 from tgerla/fixec2

Fix with_items variable syntax in ec2 example
Modernize action calls and clean comments a bit
Merge pull request #44 from tgerla/ec2fixups

Modernize action calls and clean comments a bit
changing start tomcat from started to restarted

A detailed discussion of the issue can be found on this thread. 

https://groups.google.com/forum/#!msg/ansible-project/0WK4J8sefZs/YtuT_1v5xCQJ
Merge pull request #45 from m0rganic/patch-2

changed tomcat startup from state=started to state=restarted
Update main.yaml of tomcat-standalone tasks

Changed tomcat version to download from 7.0.42 -> 7.0.47

7.0.42 url returns 404 error.
Merge pull request #47 from surukuntu/master

Update main.yaml of tomcat-standalone tasks
Added selinux role to download and install libselinux-python to fix selinux error
Merge branch 'master' of github.com:surukuntu/ansible-examples