Add ansible playbook to setup and run L2 deployment (#3)

Part of [Automate testnet nitro deployments using Ansible](https://www.notion.so/Automate-testnet-nitro-deployments-using-Ansible-0d15579430204b8daba9a8aa31e07568)

Co-authored-by: Adw8 <adwaitgharpure@gmail.com>
Reviewed-on: cerc-io/testnet-ops#3
Co-authored-by: Prathamesh Musale <prathamesh@noreply.git.vdb.to>
Co-committed-by: Prathamesh Musale <prathamesh@noreply.git.vdb.to>

l2-setup/templates/configs/l2-config.env.j2

@@ -0,0 +1,9 @@
+CERC_L1_CHAIN_ID={{ l1_chain_id }}
+CERC_L1_RPC={{ l1_rpc }}
+CERC_L1_HOST={{ l1_host }}
+CERC_L1_PORT={{ l1_port }}
+CERC_L1_BEACON={{ l1_beacon }}
+CERC_L1_ADDRESS={{ l1_address }}
+CERC_L1_PRIV_KEY={{ l1_priv_key }}
+CERC_PROPOSER_AMOUNT={{ proposer_amount }}
+CERC_BATCHER_AMOUNT={{ batcher_amount }}

l2-setup/templates/specs/l2-spec.yml.j2

@@ -0,0 +1,18 @@
+stack: /home/{{ansible_user}}/cerc/fixturenet-optimism-stack/stack/fixturenet-optimism
+deploy-to: compose
+network:
+  ports:
+    op-geth:
+     - '9545:8545'
+     - '9546:8546'
+    op-node:
+     - '8547'
+    op-batcher:
+     - '8548'
+    op-proposer:
+     - '8560'
+volumes:
+  l1_deployment: ./data/l1_deployment
+  l2_accounts: ./data/l2_accounts
+  l2_config: ./data/l2_config
+  l2_geth_data: ./data/l2_geth_data