Introduce status hook in containers lifecycle for new envStatus task

[pun-ky]

imagine sth like:

containers {
     "httpd" {
     	status {
     		execShell("systemctl status httpd.service")
     	}
     }
}

then running sh gradlew envStatus will print HTTP status

[pun-ky]

to be able to provide some output for new task like sh gradlew environmentStatus