docker-compose.yml: increase ulimits nofile to avoid failure during make docker-compose

[Andersson007]

SUMMARY

This will prevent the failure:

$ make docker-compose
...
awx_1_1     | 'AWX EE (latest)' Default Execution Environment registered.
awx_1_1     | 'AWX EE (latest)' Default Execution Environment updated.
awx_1_1     | Control Plane Execution Environment registered.
awx_1_1     | (changed: True)
awx_1_1     | Successfully registered instance awx_1
awx_1_1     | (changed: True)
awx_1_1     | Creating instance group controlplane
awx_1_1     | (changed: True)
awx_1_1     | Creating instance group default
awx_1_1     | (changed: True)
awx_1_1     | Error: The minimum number of file descriptors required to run this process is 4096 as per the "minfds" command-line argument or config file setting. The current environment will only allow you to open 4096 file descriptors.  Either raise the number of usable file descriptors in your environment (see README.rst) or lower the minfds setting in the config file to allow the process to start.
awx_1_1     | For help, use /usr/local/bin/supervisord -h
awx_1_1     | make: *** [Makefile:201: supervisor] Error 2
tools_awx_1 exited with code 2

ISSUE TYPE

• Bug, Docs Fix or other nominal change

COMPONENT NAME

• Other

AWX VERSION

devel