src/selinux/pcpupstream.te.in: changes from QA on vm26 (Fedora 27)
src/selinux/pcpupstream.te.in: changes from QA on vm26 (Fedora 27)

- add (optional) @PCP_HOSTNAME_EXEC_MAP@ for pcp_pmie_exec_t:file
- uncomment @PCP_TRACEFS_DIR_RULE@ for pmdakvm

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp