ansible-scylla-node: increase API port wait timeout to reduce CI flakiness

The 'wait for the API port to come up on all nodes' task used a
hardcoded 300s timeout. Under loaded CI runners (multiple docker
containers competing for resources) the scylla-server API can take
longer than 300s to come up even though the CQL port is already
responding, causing intermittent molecule build failures on
rockylinux9/rockylinux10 (e.g. PR #531) unrelated to the code under
test.

Bump the timeout to 600s.

Co-authored-by: Manjot Singh <ManjotS@users.noreply.github.com>

Author: cursoragent

ansible-scylla-node/tasks/common.yml

@@ -352,7 +352,7 @@
       wait_for:
         port: "{{ scylla_api_port }}"
         host: "{{ scylla_api_address }}"
-        timeout: 300
+        timeout: 600
 
     - name: wait for the cluster to become healthy
       shell: