Harden t init as network can break startup

service/__init__.py

@@ -5,8 +5,16 @@
 logger = get_logger(__name__)
 
 Tenants = TenantCache()
-try:
-    t = get_service_tapis_client(tenants=Tenants)
-except Exception as e:
-    logger.error(f'Could not instantiate tapy service client. Exception: {e}')
-    raise e
+
+# Create Tapis `t` client
+for _ in range(10):
+    try:
+        t = get_service_tapis_client(tenants=Tenants)
+        break  # Exit the loop if t is successfully created
+    except Exception as e:
+        logger.error(f'Could not instantiate tapy service client. Exception: {e}')
+        time.sleep(2)  # Delay for 2 seconds before the next attempt
+else:
+    msg = 'Failed to create tapy service client after 10 attempts (20 seconds), networking?'
+    logger.error(msg)
+    raise RuntimeError(msg)