Add motivation sentence to scs-0007-v1

Signed-off-by: Felix Kronlage-Dammers <fkr@hazardous.org>
Co-authored-by: Marvin Frommhold <depressiveRobot@users.noreply.github.com>

Author: fkr

Standards/scs-0007-v1-certification-integrators.md

@@ -15,6 +15,8 @@ For this purpose, two essential criteria are defined that must be fulfilled. In
 
 ## Motivation
 
+As an integrator, I want to obtain a certificate with the scope of _Certified SCS IaaS Integrator_ or _Certified of SCS KaaS Integrator_ in order to prove sufficient technical knowledge and experience to provide technical support for SCS.
+
 ## Regulations
 
 The certificates are awarded for the period of one year.