odo dev add flag to run non-default run command.

[kadel]

User Story

• As an odo user
• I want to be able to execute alternative run command instead of the default one
• So that I can run my app in a different mode (different configuration, flags etc..) without modifying the default command.

Example:

SpringBoot devfile has the following default run command.

- exec:
    commandLine: mvn -Dmaven.repo.local=/home/user/.m2/repository spring-boot:run
    component: tools
    group:
      isDefault: true
      kind: run
    hotReloadCapable: false
    workingDir: ${PROJECT_SOURCE}
  id: run

In some situations, I want to run spring boot application with a different profile.
This can be done adding -Dspring-boot.run.profiles=postgres flag to to spring-boot:run command.
Currently I have to edit the commandLine in order to be able to execute my with different profile.

Instead of that it would be nice to be able to add extra run command like this:

- exec:
    commandLine: mvn -Dmaven.repo.local=/home/user/.m2/repository spring-boot:run -Dspring-boot.run.profiles=postgres
    component: tools
    group:
      isDefault: false
      kind: run
    hotReloadCapable: false
    workingDir: ${PROJECT_SOURCE}
  id: run-wiht-postgres

And then simply execute odo dev --run-command run-with-postgres, when I want to switch back to using the default profile, I stop running odo dev command and start it again, but this time without --run-command flag.

Acceptance Criteria

• odo dev should have --run-command flag that controls what command is used to start application.

/kind user-story

[rm3l]

TODO (to not forget):

As commented out in [1]:

we should try to harmonize the behaviour between commands in pkg/libdevfile/libdevfile.go. Deploy is using getDefaultCommand, when Build/Test/Run is using getCommandAssociatedToGroup

[1] #5768 (comment)