added MySQL connector workarounds for 4.11-4.13#2

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cg5labs wants to merge 2 commits intoshapeblue:4.13-updatesfrom

cg5labs:4.13-updates

Commits on Apr 14, 2020

source/installguide/management-server/_database.rst - added MySQL connector workarounds for 4.11-4.13
cg5labs
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Commits on Apr 22, 2020

source/installguide/management-server/_database.rst - fixed formatting.
cg5labs
committed