URI is not hierarchical exception from MemberConfigurationService while building the project

[balajimore]

I think we should use ResourceAsStream here because of the membership-service.conf exist inside the Jar, while gradlew build starting the test cases.

Caused by: java.lang.IllegalArgumentException: URI is not hierarchical
	at java.io.File.<init>(File.java:418) ~[?:1.8.0_171]
	at com.r3.businessnetworks.membership.flows.ConfigUtils.loadConfig(ConfigUtils.kt:16) ~[membership-service-2.0.jar:?]
	at com.r3.businessnetworks.membership.flows.member.service.MemberConfigurationService.<init>(MemberConfigurationService.kt:25) ~[membership-service-2.0.jar:?]

corda-solutions/bn-apps/memberships-management/membership-service/src/main/kotlin/com/r3/businessnetworks/membership/flows/ConfigUtils.kt

Line 16 in 0d2ccbd

else ConfigFactory.parseFile(File(ConfigUtils::class.java.classLoader.getResource(propertiesFileName).toURI()))