add provider file in shared module folder, otherwise deployment fails to identify correct provider to fetch

multiple/shared_modules/provider.tf

@@ -0,0 +1,9 @@
+terraform {
+  required_version = ">= 0.13"
+  required_providers {
+    libvirt = {
+      source  = "dmacvicar/libvirt"
+      version = "0.8.3"
+    }
+  }
+}