For Installing tailored sollution you need E_HANAINS guy,
For upgrades i Guess it would be either C_HANATECxxx or C_HANASUP_1
Both of these certificates covesrs mostly HA200 (HA100 prereq) and Admin Guide...for start.
If partner company wants to provide Hana support to their customers they need to have 2 C_HANASUP certificates inhouse, at least its like that in my part of Europe, so maybe thats what your HW vendor was talking about.
SAP Certified Support Associate: SAP HANA - by the SAP HANA Academy
Sap Inhouse guys will know more.
For now, hope this helps.