[tests] move ethertest module up one level

It's going to be used by both contract and integration tests.

tests/contracts/testCollateral.nim

@@ -2,7 +2,7 @@ import pkg/chronos
 import pkg/stint
 import dagger/contracts
 import dagger/contracts/testtoken
-import ./ethertest
+import ../ethertest
 
 ethersuite "Collateral":
 

tests/contracts/testContracts.nim

@@ -4,7 +4,7 @@ import pkg/nimcrypto
 import dagger/contracts
 import dagger/contracts/testtoken
 import dagger/por/timing/periods
-import ./ethertest
+import ../ethertest
 import ./examples
 import ./time
 

tests/contracts/testInteractions.nim

@@ -1,6 +1,6 @@
 import std/os
-import ./ethertest
 import dagger/contracts
+import ../ethertest
 import ./examples
 
 ethersuite "Storage Contract Interactions":

tests/contracts/testMarket.nim

@@ -1,7 +1,7 @@
 import pkg/chronos
 import dagger/contracts
 import dagger/contracts/testtoken
-import ./ethertest
+import ../ethertest
 import ./examples
 import ./time
 

tests/contracts/testProofs.nim

@@ -1,5 +1,5 @@
-import ./ethertest
 import dagger/contracts
+import ../ethertest
 import ./examples
 import ./time