Support for more than one web host about awx-ha-instancegroup

[sujiar37]

@tamirshaul , thank you. Yes, this could be possible. Multiple web containers aren't necessary for enabling instance group, however it will be good if we put LB in front and route the web traffic accordingly.

If you had noticed both roles, the filtering is happening for the tasks where I have mentioned groups['awx_instance_group_master'][0], due to that it only brings the first value from that inventory group. This is what I would plan to write as an enhancement for this feature,

1. Update the inventory/hosts like below

$ cat inventory/hosts

[all]

[awx_instance_group_master]
Primary_Node_A
Primary_Node_B

[awx_instance_group_agent]
Primary_Node_C
Primary_Node_D

2. Then replace this entry groups['awx_instance_group_master'][0] wherever I mentioned and update it as groups['awx_instance_group_master']. It basically force the playbook to enable the web container in all hosts under the awx_instance_group_master group.

Again, this needs to be tested !!!

[sujiar37]

@tamirshaul The requested feature is added and closing this issue.