tests: Fix process58 tests on jenkins
tests: Fix process58 tests on jenkins

Tests compare output of ps with output of oscap. This commit fix issue, when ps read command_line of forked bash(before exec). Now, get_child_cmdline waits for execution of stopped_process

Hexadorsimal/openscap,mpreisler/openscap,jan-cerny/openscap,postfix/openscap,openprivacy/openscap,postfix/openscap,mpreisler/openscap,Hexadorsimal/openscap,openprivacy/openscap,Hexadorsimal/openscap,jan-cerny/openscap,Hexadorsimal/openscap,ybznek/openscap,ybznek/openscap,OpenSCAP/openscap,redhatrises/openscap,OpenSCAP/openscap,redhatrises/openscap,redhatrises/openscap,Hexadorsimal/openscap,ybznek/openscap,jan-cerny/openscap,postfix/openscap,openprivacy/openscap,jan-cerny/openscap,postfix/openscap,redhatrises/openscap,openprivacy/openscap,ybznek/openscap,mpreisler/openscap,openprivacy/openscap,redhatrises/openscap,Hexadorsimal/openscap,jan-cerny/openscap,mpreisler/openscap,mpreisler/openscap,ybznek/openscap,postfix/openscap,redhatrises/openscap,ybznek/openscap,OpenSCAP/openscap,openprivacy/openscap,OpenSCAP/openscap,postfix/openscap,mpreisler/openscap,jan-cerny/openscap,OpenSCAP/openscap,OpenSCAP/openscap