Implement eos_banner for EAPI (#22609)

On EAPI, the multi-line commands are expected to be a dict,
with key/value pairs 'cmd'/'input' .
This change implements that behaviour and fixes the idempotency
on EAPI as well.

Fixes #22494

test/units/modules/network/eos/test_eos_eapi.py

@@ -53,7 +53,7 @@ class TestEosEapiModule(TestEosModule):
         except RuntimeError:
             pass
 
-    def load_fixtures(self, commands=None):
+    def load_fixtures(self, commands=None, transport='eapi'):
         def run_commands(module, commands, **kwargs):
             output = list()
             for cmd in commands: