CBG-3783 do not print output of lsb_release

[torcolvin]

When running service/sync_gateway_service_install.sh script with --service-cmd, the output of the command is used. This is used to print value here:

sync_gateway/build/postinst.tmpl

Line 69 in 905c896

${SERVICE_CMD}

[bbrks]

I'm not sure how the PR description relates to the changed lines?

Is this change to support shells that don't have a command builtin? Which shells?

[torcolvin]

I'm not sure how the PR description relates to the changed lines?

Is this change to support shells that don't have a command builtin? Which shells?

Running command -v lsb_release will output /usr/bin/lsb_release if the command is found. Since the output of service/sync_gateway_service_install.sh --service-cmd is supposed to just be systemctl start sync_gateway but if lsb_release exists on the system it is:

/usr/bin/lsb_release
systemctl start sync_gateway

The output of this command is used in the text that is printed when the package is installed.