Added parser for openvpn status logs

[rohithasrk]

References #43. As of now, the basic parser code has been written. This code is to be tested properly with appropriate test cases. We've decided to use the package openvpn-status for the logic behind parsing openvpn logs.

To Dos:

• Debug the code testing it with many test data
• Develop an extensive test suite.
• Think about adding the server IP.

[nemesifier]

You don't need to develop an extensive test suite, basic tests are good enough.

[nemesifier]

this is the method that should be called to_python (you can get rid of the other one).
You choose a starting point of another parser which was a special case.

Since you already have a library that parses the data, you don't really need to do much apart returning the data structure that the parser expects

[rohithasrk]

I think you are right. We don't really need this method. Will edit

[nemesifier]

jsoninfo is an olsr specific thing, you should not reuse this terminology

[rohithasrk]

Oh. I see. Will edit it

[nemesifier]

the status log file of openvpn has 2 versions, we could use this attribute to indicate which version we support

[coveralls]

Coverage decreased (-7.3%) to 92.677% when pulling ad7d94e on rohithasrk:openvpn into 90e5eac on ninuxorg:master.

[rohithasrk]

Oops! A wrong rebase.

[coveralls]

Coverage decreased (-7.3%) to 92.677% when pulling 55ed0de on rohithasrk:openvpn into 90e5eac on ninuxorg:master.

[coveralls]

Coverage decreased (-7.7%) to 92.255% when pulling bcda31e on rohithasrk:openvpn into 90e5eac on ninuxorg:master.

[coveralls]

Coverage decreased (-1.8%) to 98.178% when pulling 908a7c3 on rohithasrk:openvpn into 90e5eac on ninuxorg:master.

[coveralls]

Coverage decreased (-0.9%) to 99.089% when pulling c806817 on rohithasrk:openvpn into 90e5eac on ninuxorg:master.

[nemesifier]

Thanks @rohithasrk, merged your commit in PR #47