feat: add FRANCIS_HOST to connect to a standalone Francis runtime (#1768)

backend/internal/common/testutils_unit.go

@@ -0,0 +1,10 @@
+//go:build unit
+
+// This file contains utils for unit tests and it's only built when the "unit" tag is set
+
+package common
+
+// SetFrancisAddresses sets a value for francisAddresses
+func (c *EnvConfigSchema) SetFrancisAddresses(v []string) {
+	c.francisAddresses = v
+}