ANSUPDATE-25 Explicitly enable/disable MySQL

Explicitly disabling and re-enabling MySQL as os-collect-config can
enable a situation by running where a MySQL installation set to start
upon boot can finally initialize.  Additionally explicitly calling
for configuration files to be generated should os-collect-config
have not gotten to that point yet, which can put ourselves in the
same situation as-is.

Change-Id: If665ac99c22b3f0b9926e14b3a1858da982ca955