client registration with capsule based on setting value, fixed error

tests/foreman/cli/test_host.py

@@ -2734,8 +2734,8 @@ def test_positive_host_registration_with_capsule(
     assert result.status == 0, f'Failed to register host: {result.stderr}'
 
     # Check output for "HTTP error code 422: Validation failed: Content view environment content facets is invalid"
-    assert "Validation failed" in str(result.stderr[1]), f"Error is: {result.stderr}"
-    assert "HTTP error code 422" in str(result.stderr[1]), f"Error is: {result.stderr}"
+    assert "Validation failed" in str(result.stderr), f"Error is: {result.stderr}"
+    assert "HTTP error code 422" in str(result.stderr), f"Error is: {result.stderr}"
     rhel_contenthost.unregister()
 
     # Re-register client with settings "validate_host_lce_content_source_coherence" is set to No
@@ -2748,6 +2748,6 @@ def test_positive_host_registration_with_capsule(
     assert result.status == 0, f'Failed to register host: {result.stderr}'
 
     # Check output there should not any error like "Validation failed" or "HTTP error code 422"
-    assert "Validation failed" not in str(result.stderr[1]), f"Error is: {result.stderr}"
-    assert "HTTP error code 422" not in str(result.stderr[1]), f"Error is: {result.stderr}"
+    assert "Validation failed" not in str(result.stderr), f"Error is: {result.stderr}"
+    assert "HTTP error code 422" not in str(result.stderr), f"Error is: {result.stderr}"
     rhel_contenthost.unregister()