HA service knx.read

[farmio]

Description

Add HA service read_request for issuing GroupValueRead requests.

Would "read" be a better name - so we have "send" and "read"? (I thought "read_request" may imply that there is no answer processed form this service.)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I have performed a self-review of my own code
• The documentation has been adjusted accordingly
• The changes generate no new warnings
• Tests have been added that prove the fix is effective or that the feature works
• The changes are documented in the changelog
• The Homeassistant plugin has been adjusted in case of new config options

[coveralls]

Coverage increased (+0.06%) to 94.916% when pulling 8fe524c on farmio:ha-read-service into 5eae8d6 on XKNX:master.