Added details to the workaround with new bootstrap
Added details to the workaround with new bootstrap

Explained how to install new bootstrap image in 5.0.

Change-Id: I26e8531f56830c7c9c8558d05818297906f8952a

ogelbukh/fuel-docs,ogelbukh/fuel-docs,stackforge/fuel-docs,phillipsio/fuel-docs,ogelbukh/fuel-docs,phillipsio/fuel-docs,phillipsio/fuel-docs,phillipsio/fuel-docs,stackforge/fuel-docs,ogelbukh/fuel-docs