It looks like the heat_admin user did not have a proper role on the services tenant ?

Raw format for better readability: http://paste.openstack.org/raw/484208/

[root@n27 ~]# openstack role assignment list
+----------------------------------+----------------------------------+-------+----------------------------------+----------------------------------+-----------+
| Role | User | Group | Project | Domain | Inherited |
+----------------------------------+----------------------------------+-------+----------------------------------+----------------------------------+-----------+
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 0f5fb3b47da14e19b8a39dad20dff35d | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 145d78112da945df82ab6eef473d33bf | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 14a9ae9b039749dd83d7091bdfd80795 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 464f3b67e6d54491ac296a6ceff6db31 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 5df280cbec3f4852b94a054bf2a9ace8 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 670bb7d8c2614f009993e817591cbdef | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | cf75ce9ce1ff4b3abfea45677be5c971 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | f91a4e9af4004763aeee740bc2506c1e | | a779793672254183bba23dabdd6f9bcd | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 3d3d5aee81654d29b43caa330ebf2378 | | | 7310aa5ea8424fa08be53ca227186fb4 | False |
+----------------------------------+----------------------------------+-------+----------------------------------+----------------------------------+-----------+

[root@n27 ~]# openstack role show 8cb02ff4fcc1486fa758caba1b1ee9b8
+-------+----------------------------------+
| Field | Value |
+-------+----------------------------------+
| id | 8cb02ff4fcc1486fa758caba1b1ee9b8 |
| name | admin |
+-------+----------------------------------+

[root@n27 ~]# openstack project show a6542148bace42c1bb442cda9dada65a
+-------------+-----------------------------------+
| Field | Value |
+-------------+-----------------------------------+
| description | Tenant for the openstack services |
| domain_id | default |
| enabled | True |
| id | a6542148bace42c1bb442cda9dada65a |
| is_domain | False |
| name | services |
| parent_id | None |
+-------------+-----------------------------------+

[root@n27 ~]# openstack role assignment list
+----------------------------------+----------------------------------+-------+----------------------------------+----------------------------------+-----------+
| Role | User | Group | Project | Domain | Inherited |
+----------------------------------+----------------------------------+-------+----------------------------------+----------------------------------+-----------+
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 0f5fb3b47da14e19b8a39dad20dff35d | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 145d78112da945df82ab6eef473d33bf | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 14a9ae9b039749dd83d7091bdfd80795 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 3d3d5aee81654d29b43caa330ebf2378 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 464f3b67e6d54491ac296a6ceff6db31 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 5df280cbec3f4852b94a054bf2a9ace8 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 670bb7d8c2614f009993e817591cbdef | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | cf75ce9ce1ff4b3abfea45677be5c971 | | a6542148bace42c1bb442cda9dada65a | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | f91a4e9af4004763aeee740bc2506c1e | | a779793672254183bba23dabdd6f9bcd | | False |
| 8cb02ff4fcc1486fa758caba1b1ee9b8 | 3d3d5aee81654d29b43caa330ebf2378 | | | 7310aa5ea8424fa08be53ca227186fb4 | False |
+----------------------------------+----------------------------------+-------+----------------------------------+----------------------------------+-----------+

[root@n27 ~]# openstack project list --user heat_admin
+----------------------------------+----------+
| ID | Name |
+----------------------------------+----------+
| a6542148bace42c1bb442cda9dada65a | services |
+----------------------------------+----------+