data: set read-only flag
data: set read-only flag

Fixes #278
Fixes #277
Fixes #276

Signed-off-by: Ruslan Kuprieiev <f6538312ce47017d734b1357aabc970ebf896e32@gmail.com>

dataversioncontrol/dvc,efiop/dvc,dmpetrov/dataversioncontrol,dataversioncontrol/dvc,efiop/dvc,dmpetrov/dataversioncontrol