Xfail ftu tests bug 893816

Xfailed ftu tests bug 893816
xfail marketplace search and install app bug 893283
Merge pull request #1105 from teodosia/xfail-marketplace-search-app

xfail marketplace search and install app bug 893283
Merge pull request #1104 from teodosia/xfail-ftu-tests

Xfail ftu tests bug 850313