package mysql-server-5.7 5.7.19-0ubuntu0.17.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[fnavarria]

Doftware updater reports: "Package operation failed. Theinstalletion or removal of package failed."

ProblemType: Package
DistroRelease: Ubuntu 17.04
Package: mysql-server-5.7 5.7.19-0ubuntu0.17.04.1
ProcVersionSignature: Ubuntu 4.10.0-28.32-generic 4.10.17
Uname: Linux 4.10.0-28-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.5
AptOrdering:
 openjdk-8-jdk:amd64: Install
 openjdk-8-jre:amd64: Install
 openjdk-8-jdk-headless:amd64: Install
 openjdk-8-jre-headless:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
Date: Tue Aug 1 08:34:02 2017
DpkgHistoryLog:
 Start-Date: 2017-08-01 08:33:17
 Commandline: aptdaemon role='role-commit-packages' sender=':1.85'
 Upgrade: openjdk-8-jdk:amd64 (8u131-b11-2ubuntu1.17.04.2, 8u131-b11-2ubuntu1.17.04.3), openjdk-8-jre:amd64 (8u131-b11-2ubuntu1.17.04.2, 8u131-b11-2ubuntu1.17.04.3), openjdk-8-jdk-headless:amd64 (8u131-b11-2ubuntu1.17.04.2, 8u131-b11-2ubuntu1.17.04.3), openjdk-8-jre-headless:amd64 (8u131-b11-2ubuntu1.17.04.2, 8u131-b11-2ubuntu1.17.04.3)
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-01-23 (556 days ago)
InstallationMedia: Ubuntu-MATE 15.10 "Wily Werewolf" - Release amd64 (20151021)
Logs.var.log.daemon.log:

MySQLConf.etc.mysql.conf.d.mysql.cnf: [mysql]
MySQLConf.etc.mysql.conf.d.mysqldump.cnf:
 [mysqldump]
 quick
 quote-names
 max_allowed_packet = 16M
MySQLConf.etc.mysql.mysql.conf.d.mysqld_safe_syslog.cnf:
 [mysqld_safe]
 syslog
MySQLVarLibDirListing: ['opencms', 'performance_schema', 'jadasite', 'ib_buffer_pool', 'debian-5.6.flag', 'dotcms2', 'mysql_upgrade_info', 'ib_logfile0', 'ibdata1', 'logicaldoc', 'auto.cnf', 'ib_logfile1', 'sakila', 'sys', 'test', 'mysql', 'dotCMS', 'ch2', 'debian-5.7.flag', 'affablebean']
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.10.0-28-generic root=UUID=18c00be8-6826-4096-bde8-b5362e55fb65 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.18.10ubuntu2
 apt 1.4
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 5.7.19-0ubuntu0.17.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to zesty on 2017-05-11 (81 days ago)
modified.conffile..etc.mysql.mysql.conf.d.mysqld.cnf: [modified]
mtime.conffile..etc.mysql.mysql.conf.d.mysqld.cnf: 2017-01-31T16:30:17.040234
upstart.mysql.override: manual

[Joshua Powers (powersj)]

From log:

mysql_upgrade: Got error: 2002: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) while connecting to the MySQL server

[Joshua Powers (powersj)]

I am marking this as a duplicate of LP: #1670629 as the error looks to be the same signature of that bug as well. If you disagree, please feel free to say so below and provide additional details explaining why you think that is the case.