doc/developer_guide: update doc about installing teuthology
There are 2 more ways to install teuthology. Approach with boostrap
script is easier and more convenient while other approach is more
elaborate but manual, document both of them. Don't delete the currently
documented approach because it lets users install teuthology
conveniently in a custom virtual environment. So, keep all three.
Signed-off-by: Rishabh Dave <ridave@redhat.com>
(cherry picked from commit
899c481d4006a1231354de6633fd2806aa4bd5d2)
projects / ceph.git / commit