Using LTS means the filename in MQ_ARCHIVE variable gets overwritten

[bhasterix]

The MQ_ARCHIVE variable gets overwritten with some constructed value if LTS is true as I run make-build-advancedserver.

At this point: https://github.com/ibm-messaging/mq-container/blob/master/Makefile#L34
my variable is set correctly as what I pass in ("IBM_MQ_9.2.0.4_LIN_X86-64_NOINST.tar.gz") as downloaded from Extreme Leverage.
Within this block, and on this line: https://github.com/ibm-messaging/mq-container/blob/master/Makefile#L124, the variable is overwritten and calculated as "9.2.0.4-IBM-MQ-Advanced-Non-Install-LinuxX86-64.tar.gz". The build then subsequently fails as it can't download that file in the install-mq.sh (https://github.com/ibm-messaging/mq-container/blob/master/install-mq.sh#L31).

I've had to manually rename the file to suit the script, this should be documented or fixed so that it respects the filename passed as an environment variable.

Steps to reproduce:
update config.env
REGISTRY_USER=
REGISTRY_PASS=<REGISTRY_PASS>
MQ_ARCHIVE=IBM_MQ_9.2.0.4_LIN_X86-64_NOINST.tar.gz
MQ_VERSION=9.2.0.4
LTS=true

Then execute in the workspace:
make build-advancedserver

(I've confirmed the config will override any environment variables passed on the "make..." line.)