Renamed "Run Command" to "Run Shell Command"

The original name is quite confusing for users, because they usually want to run Batch scripts inside this installer. "Execute Batch Command" is available inside "extra-tool-installers" plugin, so there's no need to implement such installer inside the core.

Related to: https://issues.jenkins-ci.org/browse/JENKINS-20635

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
[JENKINS-21202] - Generalization of Command installers
This change adds an AbstractCommandInstaller, which can be extended for every script-based installation command.

Related to https://issues.jenkins-ci.org/browse/JENKINS-21202

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
[FIXED JENKINS-21202] - Added a BatchCommandInstaller

Related to https://issues.jenkins-ci.org/browse/JENKINS-21202

Signed-off-by: Oleg Nenashev <nenashev@synopsys.com>
Merge pull request #1078 from synopsys-arc-oss/run-shell-command_renaming

Renamed "Run Command" to "Run Shell Command"