This function is used for adding ZYPP_SINGLE_RPMTRANS if the test case has ZYPP_SINGLE_RPMTRANS setting. this feature will enhance the zypper performance.
jira feature https://jira.suse.com/browse/SLE-21973 zypper single transaction performance enhancement (RFE)
This function is used for removing libopenssl-1_1-devel for bsc#1220091 We need to remove package libopenssl-1_1-devel before migration.