fix(issue-253): fix all go vet errors

Fix assertion for invalid TLS certificate test

Signed-off-by: Lorenzo <lorenzo.donini90@gmail.com>

Include security patch for yaml v2 pkg

Signed-off-by: Lorenzo <lorenzo.donini90@gmail.com>

Simplify basic auth server check

Signed-off-by: Lorenzo Donini <lorenzo.donini90@gmail.com>

Improve websocket tests

Signed-off-by: Lorenzo Donini <lorenzo.donini90@gmail.com>

Fix typo in example openssl-cs.conf

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

OCPP1.6: correct field name in MeterValues (#28)

* OCPP1.6: correct field name in MeterValues

* OCPP1.6: correct comment in core MeterValues

Co-authored-by: Benedikt Bongartz <benne@klimlive.de>

Update coverage status badge

Refactor Ocpp 1.6/2.0 (#15)

* Document ocpp 1.6 functions

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Refactor ocpp1.6 structure and naming

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Refactor ocppj naming and docs

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Update dateTime formatting in ocpp1.6

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Move feature name constants in ocpp1.6

Update documentation

* Start refactoing ocpp2.0 profiles

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Create missing ocpp 2.0 profiles

* Rename ocpp 1.6 auth package

* Restructure first half of ocpp2 messages

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Restructure second half of ocpp2.0 messages

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Rename confirmation to response

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Cleanup ocpp 2.0 endpoints

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Fix expected errors in e2e tests

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Add MessageTypeNotSupported error code

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

* Check for unsupported feature in 1.6 and update example names

Signed-off-by: Lorenzo Donini <lorenzo.donini@motius.de>

Fix release docker image name