testing/e2e: fixup recent e2e_regression
The regression comes from https://lab.nexedi.com/nexedi/slapos.core/-/commit/b0031eebef37f20ba30f5fcd972fc273e68da92a which changed the getConnectionParameterDict behaviour.
Edited by Romain Courteaud
The regression comes from https://lab.nexedi.com/nexedi/slapos.core/-/commit/b0031eebef37f20ba30f5fcd972fc273e68da92a which changed the getConnectionParameterDict behaviour.