RFR: Ignore `path=` lines in git credential fill output.

[JornVernee via github.com]

On Wed, 26 Jun 2019 14:46:38 GMT, JornVernee via github.com <duke at openjdk.java.net> wrote:

> Hi,
> 
> I'm trying out skara, but when running `git fork https://github.com/openjdk/panama git-panama` I'm getting the following exception:
> 
> ```
> Exception in thread "main" java.io.IOException: 'git credential' returned unexpected line: path=
>         at org.openjdk.skara.cli/org.openjdk.skara.cli.GitCredentials.fill(GitCredentials.java:101)
>         at org.openjdk.skara.cli/org.openjdk.skara.cli.GitFork.main(GitFork.java:130)
>         at org.openjdk.skara.cli/org.openjdk.skara.cli.GitSkara.main(GitSkara.java:130)
> ```
> 
> Looks like `path=` is not handled yet?
> 
> This PR adds some handling that ignores lines starting with `path=` for now, but maybe any unknown line should be ignored instead of throwing an exception, what do you think?
> 
> ----------------
> 
> Commits:
>  - 2149adba:	Ignore `path=` lines in git credential fill output.
> 
> Pull request:
> http://git.openjdk.java.net/skara/pull/7
> 
> Webrev:
> https://openjdk.github.io/cr/skara/7/webrev.00
> 
> Patch:
> http://git.openjdk.java.net/skara/pull/7.diff
> 
> Fetch command:
> git fetch https://github.com/openjdk/skara.git 2149adba:pr/7

Issue created at: https://bugs.openjdk.java.net/browse/SKARA-21