Add fakefs to gemfiles
Add fakefs to gemfiles

bundle inside individual projects can not find fakefs without
git path. The original fakefs is currently broken. See #89460604

Signed-off-by: Marco Voelz <46e670daac32cff840d1e50cdf9351c443be1923@sap.com>

cloudfoundry-incubator/bosh-vsphere-cpi-release,nimbus-cloud/bosh-vsphere-cpi-release,nimbus-cloud/bosh-vsphere-cpi-release,cloudfoundry-incubator/bosh-vsphere-cpi-release,cloudfoundry-incubator/bosh-vsphere-cpi-release,nimbus-cloud/bosh-vsphere-cpi-release,cloudfoundry-incubator/bosh-vsphere-cpi-release,cloudfoundry-incubator/bosh-vsphere-cpi-release