Fix Environment parsing when value contained '='

[DmitryDodzin]

If env variable contains '=' in it's value then the GetEnvVarsResponse is completely messed up with the key being the last env variable

Example:

PG_CONNECTION=postgres://localhost/?ssl_mode=disable

generates response

DaemonMessage::GetEnvVarsResponse {
    ...
    "postgres://localhost/?ssl_mode": "disable",
    ...
}!

[aviramha]

Looks good! Please add this env to the e2e as well.