LinuxDeviceProcess prepends to user commands and litters the standard output

When LinuxDeviceProcess (https://github.com/qt-creator/qt-creator/blob/master/src/plugins/remotelinux/linuxdeviceprocess.cpp#L76) tries to execute a remote command, the resulting command line is something like this:

ssh -o StrictHostKeyChecking=no -i C:/Users/kar/.ssh/id_rsa -o User=pi -o Port=22 -o BatchMode=yes 192.168.0.17 "test
-f /etc/profile && . /etc/profile ; test -f $HOME/.profile && . $HOME/.profile ; echo $$ && echo MyCommand"

In case of Raspberry Pi with default password the readAllStandardOutput() returns the following:

SSH is enabled and the default password for the 'pi' user has not been changed.
This is a security risk - please login as the 'pi' user and type 'passwd' to set a new password.

4521
MyCommand

While the expected output for the user would be "MyCommand".

The default password warning comes from the " . /etc/profile" LinuxDeviceProcess prepended to user command and the 4521 from "cmd.addArgs("echo $$ && ", CommandLine::Raw);" which is used to parse the process ID.

What is more, thanks to the Raspberry security warning, the process ID parse actually fails in LinuxDeviceProcess::readAllStandardOutput() because only parses the first line of the output:

    int cut = m_processIdString.indexOf('\n');
    if (cut != -1) {
        m_processId = m_processIdString.left(cut).toLongLong();