Too many sql server connection in RecurringJobScheduler for both (1.6.6 & 1.6.8)

Asp.net Core WebApi running on CentOS 7.2
SQL Server 2008 R2 sp3
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[deploy@uatvmgxxxx v2]$ netstat -apn | grep 172.21.101.XXX -c
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
**2422**

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"ConnectionStrings": {
"DefaultConnection": "Data Source=172.21.101.xxx,xxxxx;Initial Catalog=PiaoDB;Persist Security Info=True;User ID=xxxxx;Password=xxxxxxxx"
},

Start by investigating the RecurringJobScheduler behavior described in the issue and reproduce the excessive connection count against the stated SQL Server setup. Use the reported netstat command and connection string as the baseline; done means identifying the cause and verifying that the scheduler no longer creates excessive connections in both reported versions.

Written by the indexing model from the issue text.