Update git submodules

Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to ec5d45ce17d16982f22039409dccc756fd4a057c
  - Merge "Add more info to generated blob data"
  - Add more info to generated blob data

    Changed the way of storing nexus image information to nexus.ver in built
    blob

    Added information about OOM commit from which was the used onap docker
    images list generated

    Added information about oom/offline-installer commit used to build the
    nexus blob

    Example of the resulting nexus.ver in the nexus_data:

    nexus_image=sonatype/nexus3:3.15.2
    nexus_image_digest=sha256:5d3600fd5cf27c3a789e7d4a3ce9448086d73a4247a118d8cdcdbabb1aff4ff7
    used_image_list0=custom_docker_images.list
    used_image_list1=onap_docker_images.list
    used_image_list2=rke_docker_images.list
    oom_repo_commit=106dbc9a0224a3259f1eaf24d4bcc8571ed591ab
    installer_repo_commit=574255919970ffaf506c08d3eeaea8d6d7656236

    Issue-ID: OOM-1969

    Change-Id: Id824f97079fbd578cdc7af1ad959e95a52fe1d2c
    Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>