Python2.6 format fields

[juliusliunz]

I fixed the bug #40 by specifying the positional arguments for all occurrences of *.format(.
Also replaced the %s placeholder with {0} in line 204.

[kwoodson]

@juliusliunz, please let me know if this is still required. I updated the module to encompass this work. If not, please update and we'll get it merged.

[tdmalone]

Just including my comment from #40 here, as it is closed and might not be seen:

@kwoodson Ok I tried some monkey patching of my local copy of the role - it looks like these two changes are missing:

https://github.com/kwoodson/ansible-role-yedit/pull/41/files#diff-1247c9a5559be75581ce8356c0e51c58L204 (lines 204 & 205)

After patching those, I'm able to run this on a CentOS6 server with Python 2.6.6, without the zero length field name in format error.

So that would imply that most of @kwoodson's updates to the module have fixed the Python 2.6 issue, with the exception of those two lines from this PR, which would still need to be applied.