Removed pkgroot from version control and added to .gitignore #453

Job	Run time
run / test (mysql57, pymysql)	52m 30s
run / test (mysql57, mysqldb)	52m 57s
run / test (mysql57, asyncmy)	50m 51s
run / test (mysql57, mariadbconnector)	54m 32s
run / test (mysql80, pymysql)	29m 3s
run / test (mysql80, mysqldb)	22m 42s
run / test (mysql80, asyncmy)	26m 59s
run / test (mysql80, mariadbconnector)	36m 10s
run / test (mysql84, pymysql)	27m 39s
run / test (mysql84, mysqldb)	24m 15s
run / test (mysql84, asyncmy)	23m 22s
run / test (mysql84, mariadbconnector)	33m 38s
run / test (mysql90, pymysql)	27m 21s
run / test (mysql90, mysqldb)	25m 54s
run / test (mysql90, asyncmy)	26m 56s
run / test (mysql90, mariadbconnector)	29m 17s
run / summarize	8s
	9h 4m 14s

Provide feedback