Rest notify data

[Teagan42]

Description:

Add ability to push extra data to the rest notification component

Related issue (if applicable): fixes #

Pull request in home-assistant.github.io with documentation (if applicable): home-assistant/home-assistant.io#2708

Example entry for configuration.yaml (if applicable):

notify:
  - name: NOTIFIER_NAME
    platform: rest
    resource: http://IP_ADDRESS/ENDPOINT
    data:
       actions:
         - title: ACTION_TITLE
            topic: ACTION_TOPIC

Checklist:

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.github.io

If the code communicates with devices, web services, or third-party tools:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• New dependencies have been added to the REQUIREMENTS variable ([example][ex-requir]).
• New dependencies are only imported inside functions that use them ([example][ex-import]).
• New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• Tests have been added to verify that the new code works.

[mention-bot]

@Teagan42, thanks for your PR! By analyzing the history of the files in this pull request, we identified @Theb-1, @fabaff and @balloob to be potential reviewers.

[houndci-bot]

whitespace after '{'
whitespace before '}'

[MartinHjelmare]

Should we make the _data_template_creator a public template helper function? I know it's used in the service helper module too at least.

[Teagan42]

Wouldn't be a bad idea.. I can get to it later

…

On Thu, May 25, 2017 at 11:39 AM, Martin Hjelmare ***@***.***> wrote: Should we make the _data_template_creator a public template helper function? I know it's used in the service helper module too at least. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#7757 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AC2fZTNF6c8U5j0ZJLcZTBt7a1CsVMxMks5r9bzZgaJpZM4Nlv4g> .

[MartinHjelmare]

Yeah, good to make that another PR. This one looks good!