Bug 1892 - Karaf setenv should use '=' instead of '=='

Brings us inline with what hte karaf scripts do and therefore
both karaf and set env script will be compatible.

Change-Id: I98b1e82080b64d785801a6b3f2953ac95dd226be
Signed-off-by: Devin Avery <devin.avery@brocade.com>
Merge "Bug 1892 - Karaf setenv should use '=' instead of '=='"