backward_incompat: git didn't track empty directories need empty file to keep them

diff --git a/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/OSDMap b/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/OSDMap
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/OSDMap::Incremental b/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/OSDMap::Incremental
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/bluefs_fnode_t b/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/bluefs_fnode_t
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/bluefs_super_t b/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/bluefs_super_t
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/pg_pool_t b/archive/20.2.0-380-gdbcbbd3f281/backward_incompat/pg_pool_t
new file mode 100644 (file)
index 0000000..e69de29