Details
Description
(seemingly intermittent) failure of the pattern matcher in TestAbfsClient.validateUserAgent
java.lang.AssertionError: User agent Azure Blob FS/1.0 (JavaJRE 1.8.0_121; MacOSX 10.13.6; openssl-1.0) Partner Service does not match regexp Azure Blob FS\/1.0 \(JavaJRE ([^\)]+) SunJSSE-1.8\) Partner Service
Using a regexp is probably too brittle here: safest just to look for some specific substring.