Use 'pkgconfig' name for RHEL based distron
Use 'pkgconfig' name for RHEL based distron

In RHEL based distros, there is no 'pkg-config'
package name. Instead, it is under 'pkgconfig' name.

Change-Id: Iee263bfb8a20ac9cf4ac28bcbfc7f045593b66f6

fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests,fuel-infra/puppet-manifests