Update Apigee Product using apigee-config-maven-plugin

[manishsrivastav]

Unable to update existing Product using apigee-config-maven-plugin plugin. Getting error 
[ERROR] Failed to execute goal com.apigee.edge.config:apigee-config-maven-plugin:1.5.1:apiproducts (create-config-apiproduct) on project TestConfigPlugin: Execution create-config-apiproduct of goal com.apigee.edge.config:apigee-config-maven-plugin:1.5.1:apiproducts failed: Invalid use of BasicClientConnManager: connection still allocated.
[ERROR] Make sure to release the connection before allocating another one.
[ERROR] -> [Help 1]

Command I am using 

mvn install -P<profileName> -Dapigee.config.options=update -Dapigee.config.dir=resources/edge

[Grumlop]

Same issue

com.apigee.edge.config:apigee-config-maven-plugin:1.5.4 failed: Invalid use of BasicClientConnManager: connection still allocated.