Necessity to add the 'processes' parameter as a variable

[AlekseiSidorenko]

SUMMARY
For now 'processes' parameter is set to 150 by default. It is often not enough for application (e.g. SCHE-APC project) and leads to error ORA-00020.

Have to add ability of setting this parameter as a variable in playbook.

ISSUE TYPE
New feature or request

ANSIBLE VERSION
ansible >=2.5

OS / ENVIRONMENT
centos6/centos7

EXPECTED RESULTS
Ability to set this parameter as variable in playbook.

ACTUAL RESULTS
Predefined 'processes' parameter is set to 150