Use URI::DEFAULT_PARSER escape/unescape to avoid ruby 2.7 warnings

Fixes various warnings of this variety:
app/models/file_depot_ftp.rb:128: warning: URI.escape is obsolete
app/models/mixins/file_depot_mixin.rb:42: warning: URI.escape is obsolete

From: ManageIQ/manageiq#21036

Related: ManageIQ/manageiq#19678


(transferred from ManageIQ/manageiq-gems-pending@3bddaa4)

lib/manageiq/smartstate/mount/miq_generic_mount_session.rb

@@ -78,7 +78,7 @@ def self.new_with_opts(opts)
 
   def self.uri_scheme_to_class(uri)
     require 'uri'
-    scheme, userinfo, host, port, registry, share, opaque, query, fragment = URI.split(URI.encode(uri))
+    scheme, userinfo, host, port, registry, share, opaque, query, fragment = URI.split(URI::DEFAULT_PARSER.escape(uri))
     case scheme
     when 'smb'
       MiqSmbSession
@@ -327,8 +327,8 @@ def log_uri_still_configured?(log_uri)
     # Only remove the log file if the current depot @settings are based on the same base URI as the log_uri to be removed
     return false if log_uri.nil? || @settings[:uri].nil?
 
-    scheme, userinfo, host, port, registry, share, opaque, query, fragment = URI.split(URI.encode(@settings[:uri]))
-    scheme_log, userinfo_log, host_log, port_log, registry_log, share_log, opaque_log, query_log, fragment_log = URI.split(URI.encode(log_uri))
+    scheme, userinfo, host, port, registry, share, opaque, query, fragment = URI.split(URI::DEFAULT_PARSER.escape(@settings[:uri]))
+    scheme_log, userinfo_log, host_log, port_log, registry_log, share_log, opaque_log, query_log, fragment_log = URI.split(URI::DEFAULT_PARSER.escape(log_uri))
 
     return false if scheme != scheme_log
     return false if host != host_log
@@ -457,7 +457,7 @@ def mount_root
   def relative_to_mount(uri)
     log_header = "MIQ(#{self.class.name}-relative_to_mount)"
     logger.info("#{log_header} mount point [#{@mount_path}], uri: [#{uri}]...")
-    scheme, userinfo, host, port, registry, path, opaque, query, fragment = URI.split(URI.encode(uri))
+    scheme, userinfo, host, port, registry, path, opaque, query, fragment = URI.split(URI::DEFAULT_PARSER.escape(uri))
 
     # Replace any encoded spaces back into spaces since the mount commands accepts quoted spaces
     path.gsub!('%20', ' ')

lib/manageiq/smartstate/mount/miq_glusterfs_session.rb

@@ -13,7 +13,7 @@ def initialize(log_settings)
 
   def connect
     _scheme, _userinfo, @host, _port, _registry, @mount_path, _opaque, _query, _fragment =
-      URI.split(URI.encode(@settings[:uri]))
+      URI.split(URI::DEFAULT_PARSER.escape(@settings[:uri]))
     super
   end
 

lib/manageiq/smartstate/mount/miq_nfs_session.rb

@@ -12,7 +12,7 @@ def initialize(log_settings)
   end
 
   def connect
-    scheme, userinfo, @host, port, registry, @mount_path, opaque, query, fragment = URI.split(URI.encode(@settings[:uri]))
+    scheme, userinfo, @host, port, registry, @mount_path, opaque, query, fragment = URI.split(URI::DEFAULT_PARSER.escape(@settings[:uri]))
     super
   end