YUM groups/groupinstall will not install groups - RHEL 7

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I'm having trouble installing groups with YUM. I would like to install the "Development tools" group. But I have noticed I cannot install any group. I did search and found reference to Fedora's YUM needing a bug fix and this work around:
$ sudo yum-config-manager --save --setopt=group_command=compat"

...But still cannot install groups:

$ sudo yum group install "Development tools"
Loaded plugins: langpacks, product-id, subscription-manager
epel/x86_64/metalink | 14 kB 00:00
rhel-7-workstation-extras-rpms | 2.5 kB 00:00
rhel-7-workstation-optional-rpms | 2.9 kB 00:00
rhel-7-workstation-rpms | 3.7 kB 00:00
rpmforge | 1.9 kB 00:00
Warning: Group development does not have any packages to install.
No packages in any requested group available to install or update

$ sudo yum grouplist | grep Development
Development and Creative Workstation
Development tools

$ sudo yum group install "Development tools"
Loaded plugins: langpacks, product-id, subscription-manager
Warning: Group development does not have any packages to install.
No packages in any requested group available to install or update

$ sudo yum groups install "Development tools"
Loaded plugins: langpacks, product-id, subscription-manager
Warning: Group development does not have any packages to install.
No packages in any requested group available to install or update

$ sudo yum groupinstall "Development tools"
Loaded plugins: langpacks, product-id, subscription-manager
Warning: Group development does not have any packages to install.
No packages in any requested group available to install or update

$ sudo yum repolist
Loaded plugins: langpacks, product-id, subscription-manager
repo id repo name status
epel/x86_64 Extra Packages for E 6,388
rhel-7-workstation-extras-rpms/x86_64 Red Hat Enterprise L 0
rhel-7-workstation-optional-rpms/7Workstation/x86_64 Red Hat Enterprise L 4,280
rhel-7-workstation-rpms/7Workstation/x86_64 Red Hat Enterprise L 5,314
rpmforge RHEL 7Workstation - 245

$ rpm -qa | grep -i rhn
rhn-setup-2.0.2-5.el7.noarch
rhnlib-2.5.65-2.el7.noarch
yum-rhn-plugin-2.0.1-4.el7.noarch
rhnsd-5.0.13-3.el7.x86_64
rhn-check-2.0.2-5.el7.noarch
rhn-setup-gnome-2.0.2-5.el7.noarch
rhn-client-tools-2.0.2-5.el7.noarch

$ rpm -qa | grep -i yum
yum-metadata-parser-1.1.4-10.el7.x86_64
yum-rhn-plugin-2.0.1-4.el7.noarch
PackageKit-yum-0.8.9-11.el7.x86_64
yum-3.4.3-118.el7.noarch
yum-langpacks-0.4.2-3.el7.noarch
yum-utils-1.1.31-25.el7_0.noarch

$ sudo yum upgrade yum
Loaded plugins: langpacks, product-id, subscription-manager
No packages marked for update

$ uname -a
Linux xxxx.xxxxx.xxxxx.com 3.10.0-123.9.2.el7.x86_64 #1 SMP Wed Sep 24 14:20:59 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux

Would someone point me to the right direction to solve this?

Thank you!

/MM

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