Initialize the controller manager services after initializing resource manager (backport #1271)

[mergify]

This is an automatic backport of pull request #1271 done by Mergify.
Cherry-pick of bdad009 has failed:

On branch mergify/bp/iron/pr-1271
Your branch is up to date with 'origin/iron'.

You are currently cherry-picking commit bdad009.
  (fix conflicts and run "git cherry-pick --continue")
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Changes to be committed:
	modified:   controller_manager/test/test_hardware_management_srvs.cpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   controller_manager/src/controller_manager.cpp

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[saikishor]

Fixing conflicts