Fix CLI load_controller verb

[christophfroehlich]

This fixes the CLI commands of example_1 with the new option introduced with ros-controls/ros2_control#1703

Fixes #555

[saikishor]

@christophfroehlich should we wait for the binary release?

[christophfroehlich]

@christophfroehlich should we wait for the binary release?

No, because the master version is neither working with the current release, or am I wrong?

[saikishor]

@christophfroehlich should we wait for the binary release?

No, because the master version is neither working with the current release, or am I wrong?

Well in theory, the PR: ros-controls/ros2_control#1703 is merged already. The current failing builds are both binary builds (main and testing)

[christophfroehlich]

But I mean the 1703 is not included in the 4.17 release. And the current version of load_controller from the head of ros2_control_demos is not working with 4.17

[saikishor]

But I mean the 1703 is not included in the 4.17 release. And the current version of load_controller from the head of ros2_control_demos is not working with 4.17

Shall we wait for the release then?

[saikishor]

LGTM

[christophfroehlich]

The part of the demo is not working at all without merging this PR 😬 after merge, at least it works for users with source builds. And I can live with red CI of the binary builds.