Divide sap_open_session in to two parts. One where sme_open_session
is happening and the other one where sap context is getting initialized
to some values.
Divide sap_close_session in to three parts. One where sme_close_session
is happening, another where sap context is getting reset, and the
remaining one where global dfs parameters are getting reset.
Change-Id: I3126acbf4174261938c1f1ff19637bce87d7bddf
CRs-Fixed: 2036385
b01de79ea7