Merge pull request #1861 from scottyaslan/oemdocDevBranch

[BACKLOG-194] add unintentionally removed method parameter
[BACKLOG-195] Added documentation for SchedulerResource
Merge pull request #1862 from bmorrise/oemdocdev

[BACKLOG-195] Added documentation for SchedulerResource
[BACKLOG-195] -- Added unit tests for SchedulerResource
[BACKLOG-481] Refactor and REST documentation for getSystemRoles
Merge pull request #1863 from krivera-pentaho/oemdoc-dev

[BACKLOG-195] -- Added unit tests for SchedulerResource
Merge pull request #1864 from brendan-lynch/oemdoc-dev

[BACKLOG-481] Refactor and REST documentation for getSystemRoles
[BACKLOG-197] update tests