8211978: Move testlibrary/jdk/testlibrary/SimpleSSLContext.java and testkeys to network testlibrary
Summary: Move SimpleSSLContext.java and testkeys to test/lib/jdk/test/lib/net
Reviewed-by: chegar
^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
.*/JTreport/.*
.*/JTwork/.*
.*/.git/.*