cChocoSource does not update priority correctly for existing source

[gmatusko]

To work aournd the -Source issue with cChocoPackageInstaller I'm trying to shuffle around the order of the sources in the configi file. If a source is present and I simply want to change the priority the element is not updated properly. To work around, I'm removing the source and andding it back in with a new priority. No a huge deal but just wanted to point it out in case other run across this.

[ferventcoder]

Thanks for noting this.

[gmatusko]

While looking at this is would be good to add a parameter to set disable source to true/false.

[pauby]

@gmatusko See #98