Comment 82 for bug 1847361

The new dir by maintainer scripts now is:
  /var/run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/
That matches the version as internally stord by that qemu version.

Now loading works as expected - after using device_attach with the original files moved away.
root@b:~# pidof qemu-system-x86_64; cat /proc/$(pidof qemu-system-x86_64)/maps | grep -e rbd -e ceph -e curl -e iscsi
116371
7f14253cd000-7f14253f1000 r-xp 00000000 00:43 43986 /usr/lib/x86_64-linux-gnu/libiscsi.so.7.0.2
7f14253f1000-7f14255f0000 ---p 00024000 00:43 43986 /usr/lib/x86_64-linux-gnu/libiscsi.so.7.0.2
7f14255f0000-7f14255f1000 r--p 00023000 00:43 43986 /usr/lib/x86_64-linux-gnu/libiscsi.so.7.0.2
7f14255f1000-7f14255f2000 rw-p 00024000 00:43 43986 /usr/lib/x86_64-linux-gnu/libiscsi.so.7.0.2
7f14255f2000-7f14255fa000 r-xp 00000000 00:4d 208 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-iscsi.so
7f14255fa000-7f14257f9000 ---p 00008000 00:4d 208 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-iscsi.so
7f14257f9000-7f14257fa000 r--p 00007000 00:4d 208 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-iscsi.so
7f14257fa000-7f14257fb000 rw-p 00008000 00:4d 208 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-iscsi.so
7f147cdd7000-7f147ce51000 r-xp 00000000 00:43 9918 /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4.5.0
7f147ce51000-7f147d050000 ---p 0007a000 00:43 9918 /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4.5.0
7f147d050000-7f147d053000 r--p 00079000 00:43 9918 /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4.5.0
7f147d053000-7f147d054000 rw-p 0007c000 00:43 9918 /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4.5.0
7f147d054000-7f147d058000 r-xp 00000000 00:4d 205 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-curl.so
7f147d058000-7f147d258000 ---p 00004000 00:4d 205 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-curl.so
7f147d258000-7f147d259000 r--p 00004000 00:4d 205 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-curl.so
7f147d259000-7f147d25a000 rw-p 00005000 00:4d 205 /run/qemu/_Debian_1_2.11+dfsg-1ubuntu7.25~ppa1_/block-curl.so

I'll upload this qemu fixup to bionic-unapproved for a quick re-review and retest (it builds quite some time)