Fix falses not being set correctly (#92)
Fix falses not being set correctly (#92)

* fix: switch getOk to getOkExists

getOk requires non-zero value. `False` is the zero value for booleans

* fix: drop the usage of GetOkExists and use default values for bootable/source_ip_filtering
vtorhonen/terraform-provider-upcloud,vtorhonen/terraform-provider-upcloud