enroll.sh assumes `dpkg-architecture` is installed

[CptOfEvilMinions]

root@ubuntuvm:/home/testuser# curl -sk https://tls.dc0.osctrl.com/e11633cd-77b5-455e-8ebf-9fbcf3a37b73/27CpAjwj7wNfIM2QBEBeas8jWxI/enroll.sh | sh
sh: 25: dpkg-architecture: not found
[+] OS=linux
[+] _SECRET_FILE=/etc/osquery/osctrl-dev.secret
[+] _FLAGS=/etc/osquery/osquery.flags
[+] _CERT=/etc/osquery/certs/osctrl-dev.crt
[+] IMPORTANT! If osquery is not installed, it will be installed.
[+] [+] osctrl-dev needs osquery
[+] Installing osquery for linux
[+] Installing osquery in Linux
[+] DEB based system detected
##O=#  #
dpkg-deb: error: '/tmp/osquery_5.2.2-1.linux_.deb' is not a Debian format archive
dpkg: error processing archive /tmp/osquery_5.2.2-1.linux_.deb (--install):
 dpkg-deb --control subprocess returned error exit status 2
Errors were encountered while processing:
 /tmp/osquery_5.2.2-1.linux_.deb
[+] Stopping osqueryd
Failed to stop osqueryd.service: Unit osqueryd.service not loaded.
[!] Fail to enroll osctrl-dev node
root@ubuntuvm:/home/testuser#

Solution use dpkg command:

dpkg --print-architecture

root@ubuntuvm:/home/testuser# dpkg --print-architecture
amd64

enroll.sh
FROM:

_DEB_ARCH=$(dpkg-architecture -q DEB_BUILD_ARCH)

TO:

_DEB_ARCH=$(dpkg --print-architecture)

[CptOfEvilMinions]

Will try and submit a PR for this.

[CptOfEvilMinions]

#251

[CptOfEvilMinions]

#251