software/slapos-testing: install psycopg2 for slapos.cookbook

software/slapos-testing/software.cfg

@@ -18,6 +18,7 @@ extends =
   ../../component/grep/buildout.cfg
   ../../component/userhosts/buildout.cfg
   ../../component/postgresql/buildout.cfg
+  ../../component/psycopg2/buildout.cfg
   ../../stack/slapos.cfg
   ../../stack/caucase/buildout.cfg
   ../../stack/nxdtest.cfg
@@ -67,6 +68,7 @@ egg = slapos.cookbook[test]
 setup = ${slapos.cookbook-repository:location}
 depends =
   ${slapos.core-setup:egg}
+  ${psycopg2:egg}
   ${slapos-cookbook-dependencies:eggs}
 
 [slapos.core-setup]
@@ -246,3 +248,4 @@ pyflakes = 2.0.0
 zope.testing = 4.6.2
 urllib3 = 1.24.1
 pathlib = 1.0.1
+psycopg2 = 2.8.6