Add FM rest API document
Remove the alarm and log APIs from sysinv rest API document
Update the collect script with the FM config file new location
Story: 2002828
Task: 22747
Depends-On: https://review.openstack.org/#/c/591452/
Change-Id: Ica507af0b6b0dc137bf1e469cdaed678917f24e8
Signed-off-by: Tao Liu <tao.liu@windriver.com>