make internal imports as relative path

[ricardogsilva]

atm, internal imports starts with geoserverx

from geoserverx.models.coverages_layer import CoverageModel
from geoserverx.models.coverages_store import CoveragesStoreModel, CoveragesStoresModel

Let's use relative imports instead:

from ..models.coverages_layer import CoverageModel
from ..models.coverages_store import CoveragesStoreModel, CoveragesStoresModel

this will help developer to understand what is internal and what is 3rd party dependent.

[krishnaglodha]

#89 raised