Revert "clean up testng dependencies in our subprojects (using 6.8.1)"

This reverts commit d5f096e2b423e7d87a7bfa86234c302ecce42962.
Revert "clean up hamcrest dependencies in our subprojects"

This reverts commit 66f5a6b34b2448bbdcdb63466a7d6879919ccae1.
updated testng dependency to 6.8.1
Merge branch 'dependencyUpdates' of https://github.com/alphaone/hmac-auth
Revert "using ApacheHttpClient4 too get rid of dependency to deprecated org.apache.commons.httpclient.HttpClient"

This reverts commit 5184155df8fd0aa298005813b270dd175f04ed7e.

Conflicts:

	hmac-auth-common/common.gradle