add missing dependencies

packages/py-hippounit/package.py

@@ -19,5 +19,6 @@ class PyHippounit(PythonPackage):
     depends_on('python@3.6.9:')
     depends_on('py-setuptools',       type=('build'))
     depends_on('py-future',           type=('build', 'run'))
+    depends_on('py-scipy',            type=('build', 'run'))
     depends_on('py-sciunit@0.2.5.1:', type=('build', 'run'))
     depends_on('py-efel@4.0.4:',      type=('build', 'run'))

packages/py-snudda/package.py

@@ -14,6 +14,7 @@ class PySnudda(PythonPackage):
 
     depends_on("unzip",                 type=("build"))
     depends_on("py-setuptools",         type=("build"))
+    depends_on("py-importlib-metadata", type=("build","run"))
     depends_on("py-bluepyopt@1.11.7:",  type=("build","run"))
     depends_on("py-h5py@3.2.1:",        type=("build","run"))
     depends_on("py-ipyparallel@6.3.0:", type=("build","run"))