fix(tests): Don't expect a json in stdout from kwctl anymore

Signed-off-by: Víctor Cuadrado Juan <vcuadradojuan@suse.de>

e2e.bats

@@ -7,8 +7,7 @@
 	  echo "output = ${output}"
 
 	[ "$status" -ne 0 ]
-	[ $(expr "$output" : '.*"valid":false.*') -ne 0 ]
-	[ $(expr "$output" : '.*"message":"deniedStorageClasses cannot be empty".*') -ne 0 ]
+	[ $(expr "$output" : '.*Provided settings are not valid: "deniedStorageClasses cannot be empty".*') -ne 0 ]
 }
 
 @test "Empty denied storage classes list should fail" {
@@ -18,8 +17,7 @@
 	  echo "output = ${output}"
 
 	[ "$status" -ne 0 ]
-	[ $(expr "$output" : '.*"valid":false.*') -ne 0 ]
-	[ $(expr "$output" : '.*"message":"deniedStorageClasses cannot be empty".*') -ne 0 ]
+	[ $(expr "$output" : '.*Provided settings are not valid: "deniedStorageClasses cannot be empty".*') -ne 0 ]
 }
 
 @test "Fallback cannot be in the denied storage classes list" {
@@ -29,8 +27,7 @@
 	  echo "output = ${output}"
 
 	[ "$status" -ne 0 ]
-	[ $(expr "$output" : '.*"valid":false.*') -ne 0 ]
-	[ $(expr "$output" : '.*"message":"fallbackStorageClass cannot be in deniedStorageClasses".*') -ne 0 ]
+	[ $(expr "$output" : '.*Provided settings are not valid: "fallbackStorageClass cannot be in deniedStorageClasses".*') -ne 0 ]
 }
 
 @test "Accept PVC not using denied storage classes names" {