Add namespace aware parsing for <hello>

[GregDThomas]

This PR is part of the fix for https://github.com/Juniper/netconf-java/issues/49

It a) Introduces a new Hello.java that represents the <hello> NETCONF element. This is generated by using a namespace aware XML parser, so copes with the "nc:" prefix discussed in the ticket b) uses the Hello.java to both generate the client <hello> and parse the server <hello>. This means that the library now will correctly identify the session id when the server is using a nc: prefix. Note that before making a changes, I wrote tests around both sending the client <hello> and receiving the server <hello> - so I'm confident it's not had an deleterious effects. I've also tested it by accessing a local device - and is working OK.

Note; this is only part of the fix for the issue. The <rpc-reply> element needs similar work before the namespace prefix issue can be fully resolved.

• I like to keep each PR as small as possible, to make it clearer what's going on, and
• The <rpc-reply> element is going to be more complex - before I spent lots of effort on it I wanted to have some confidence that my mechanism for solving it would be acceptable

So any feedback grateful appreciated!

[ydnath]

@peterjhill please review

[peterjhill]

@GregDThomas , could you please squash all the commits into a single commit. In case you haven't done that before, in your fork, you would do

git rebase -i 5c021c7d54 I think that is the first hash after your feature branch, closest to where you branched.

That will bring up a window with a list of commit hashes and comments. You can change all the picks to "s" for squash.

Then it will allow you to update the commit message. I would update the message with all the changes in the final commit.

Here is an article on squashing: https://medium.com/@slamflipstrom/a-beginners-guide-to-squashing-commits-with-git-rebase-8185cf6e62ec

[GregDThomas]

could you please squash all the commits into a single commit.

OK, I've squashed that down to one commit. I think I've made changes for all your comments except two, which I've responded to above.

Thanks for the feedback!

[peterjhill]

Let me know if you want to make any more changes based on my comments. I'll ping Juniper once we are all set so they can do any final checks and merge.

Thanks for your contributions!

[peterjhill]

Cool, I will ping Juniper.

[GregDThomas]

Nope, no more plans to make changes unless someone strongly objects to the current code!

[GregDThomas]

Hi folks; where are are with this PR? Do you want me to remove the final and/or .editorconfig file? Or is there something else you'd like done? I hope to get to the next stage of this in the coming week, weather permitting.

[Vladislav-Kisliy]

I have no objections probably somebody else has :man_shrugging:

[peterjhill]

Let me ping Juniper

[GregDThomas]

Thank you for merging.