IJRAH-286: log4j.properties: Set default level to WARN, and com.blackducksoftware.integration to INFO. Also adjusted msg format
IJRAH-286: log4j.properties: Set default level to WARN, and com.blackducksoftware.integration to INFO. Also adjusted msg format

blackducksoftware/hub-jira,blackducksoftware/hub-jira,blackducksoftware/hub-jira