[PLAT-2378] ignore all install/db directory
[PLAT-2378] ignore all install/db directory

nssales/OG-Platform,McLeodMoores/starling,nssales/OG-Platform,DevStreet/FinanceAnalytics,DevStreet/FinanceAnalytics,ChinaQuants/OG-Platform,McLeodMoores/starling,jerome79/OG-Platform,jeorme/OG-Platform,jerome79/OG-Platform,DevStreet/FinanceAnalytics,ChinaQuants/OG-Platform,ChinaQuants/OG-Platform,codeaudit/OG-Platform,codeaudit/OG-Platform,McLeodMoores/starling,DevStreet/FinanceAnalytics,codeaudit/OG-Platform,codeaudit/OG-Platform,nssales/OG-Platform,jerome79/OG-Platform,McLeodMoores/starling,jerome79/OG-Platform,jeorme/OG-Platform,jeorme/OG-Platform,ChinaQuants/OG-Platform,jeorme/OG-Platform,nssales/OG-Platform