Add rcurl with sftp support to fancyr 6.1 flavor#132

Draft

tkilias wants to merge 3 commits intomasterfrom feature/rcurl_with_sftp

+127-8

Commits on Nov 13, 2020

Add test for rcurl with sftp and add script to compile libcurl with sftp (not yet used)
tkilias
committed
Change flavor_base_deps of fancyr-EXASOL-6.1.0 to build libcurl with libssh support
tkilias
committed
Fix and activate compile_libcurl3_with_sftp.sh and fix its test
tkilias
committed